diff --git a/editor/layout/main.fl b/editor/layout/main.fl
index dffc20d7..fe3824c2 100644
--- a/editor/layout/main.fl
+++ b/editor/layout/main.fl
@@ -11,7 +11,7 @@ widget_class mainView {open
     class Background
   }
   Fl_Group {} {
-    comment {theme=darkTheme}
+    comment {theme=darkTheme} open
     xywh {0 0 800 110}
     class LogicalGroup
   } {
@@ -44,16 +44,6 @@ widget_class mainView {open
       xywh {185 5 380 100} box ROUNDED_BOX
       class RoundedGroup
     } {
-      Fl_Box {} {
-        label {File:}
-        xywh {200 13 40 30} labelsize 16
-        class Label
-      }
-      Fl_Box {} {
-        label {KS:}
-        xywh {200 45 40 30} labelsize 16
-        class Label
-      }
       Fl_Box {} {
         label {Separator 1}
         xywh {195 41 360 5} box BORDER_BOX labeltype NO_LABEL
@@ -66,12 +56,12 @@ widget_class mainView {open
       }
       Fl_Box sfzFileLabel_ {
         label {DefaultInstrument.sfz}
-        xywh {265 12 230 30} labelsize 20
+        xywh {195 11 250 31} labelsize 20 align 20
         class Label
       }
       Fl_Box {} {
-        label {Key switch}
-        xywh {265 44 230 30} labelsize 20
+        label {Key switch:}
+        xywh {195 44 250 30} labelsize 20 align 20
         class Label
       }
       Fl_Box {} {
@@ -81,12 +71,12 @@ widget_class mainView {open
       }
       Fl_Button {} {
         comment {tag=kTagLoadSfzFile}
-        xywh {500 14 25 25} labelsize 24
+        xywh {505 14 25 25} labelsize 24
         class LoadFileButton
       }
       Fl_Button {} {
         comment {tag=kTagEditSfzFile}
-        xywh {525 14 25 25} labelsize 24
+        xywh {530 14 25 25} labelsize 24
         class EditFileButton
       }
       Fl_Box infoVoicesLabel_ {
@@ -111,6 +101,16 @@ widget_class mainView {open
         xywh {500 76 50 25} labelsize 12 align 16
         class Label
       }
+      Fl_Button {} {
+        comment {tag=kTagNextSfzFile}
+        xywh {480 14 25 25} labelsize 24
+        class NextFileButton
+      }
+      Fl_Button {} {
+        comment {tag=kTagPreviousSfzFile}
+        xywh {455 14 25 25} labelsize 24
+        class PreviousFileButton
+      }
     }
     Fl_Group {} {open
       xywh {570 5 225 100} box ROUNDED_BOX
diff --git a/editor/src/editor/Editor.cpp b/editor/src/editor/Editor.cpp
index 4c16773d..37bee6a6 100644
--- a/editor/src/editor/Editor.cpp
+++ b/editor/src/editor/Editor.cpp
@@ -11,8 +11,13 @@
 #include "NativeHelpers.h"
 #include <absl/strings/string_view.h>
 #include <absl/strings/match.h>
+#include <absl/strings/ascii.h>
 #include <ghc/fs_std.hpp>
 #include <array>
+#include <algorithm>
+#include <functional>
+#include <type_traits>
+#include <system_error>
 #include <cstdarg>
 #include <cstdio>
 
@@ -46,6 +51,8 @@ struct Editor::Impl : EditorController::Receiver, IControlListener {
     enum {
         kTagLoadSfzFile,
         kTagEditSfzFile,
+        kTagPreviousSfzFile,
+        kTagNextSfzFile,
         kTagSetVolume,
         kTagSetNumVoices,
         kTagSetOversampling,
@@ -101,9 +108,12 @@ struct Editor::Impl : EditorController::Receiver, IControlListener {
 
     void chooseSfzFile();
     void changeSfzFile(const std::string& filePath);
+    void changeToNextSfzFile(long offset);
     void chooseScalaFile();
     void changeScalaFile(const std::string& filePath);
 
+    static bool scanDirectoryFiles(const fs::path& dirPath, std::function<bool(const fs::path&)> filter, std::vector<fs::path>& fileNames);
+
     static absl::string_view simplifiedFileName(absl::string_view path, absl::string_view removedSuffix, absl::string_view ifEmpty);
 
     void updateSfzFileLabel(const std::string& filePath);
@@ -377,6 +387,8 @@ void Editor::Impl::createFrameContents()
         typedef STextButton HomeButton;
         typedef STextButton SettingsButton;
         typedef STextButton EditFileButton;
+        typedef STextButton PreviousFileButton;
+        typedef STextButton NextFileButton;
         typedef SPiano Piano;
 
         auto createLogicalGroup = [](const CRect& bounds, int, const char*, CHoriTxtAlign, int) {
@@ -505,6 +517,12 @@ void Editor::Impl::createFrameContents()
         auto createLoadFileButton = [&createGlyphButton](const CRect& bounds, int tag, const char*, CHoriTxtAlign, int fontsize) {
             return createGlyphButton(u8"\ue1a3", bounds, tag, fontsize);
         };
+        auto createPreviousFileButton = [&createGlyphButton](const CRect& bounds, int tag, const char*, CHoriTxtAlign, int fontsize) {
+            return createGlyphButton(u8"\ue0d9", bounds, tag, fontsize);
+        };
+        auto createNextFileButton = [&createGlyphButton](const CRect& bounds, int tag, const char*, CHoriTxtAlign, int fontsize) {
+            return createGlyphButton(u8"\ue0da", bounds, tag, fontsize);
+        };
         auto createPiano = [](const CRect& bounds, int, const char*, CHoriTxtAlign, int) {
             SPiano* piano = new SPiano(bounds);
             return piano;
@@ -669,6 +687,56 @@ void Editor::Impl::changeSfzFile(const std::string& filePath)
     updateSfzFileLabel(filePath);
 }
 
+void Editor::Impl::changeToNextSfzFile(long offset)
+{
+    if (currentSfzFile_.empty())
+        return;
+
+    const fs::path filePath = fs::u8path(currentSfzFile_);
+    const fs::path dirPath = filePath.parent_path();
+
+    // extract file names of regular files from the sfz directory
+    std::vector<fs::path> fileNames;
+    fileNames.reserve(64);
+
+    auto fileFilter = [](const fs::path &name) -> bool {
+        std::string ext = name.extension().u8string();
+        absl::AsciiStrToLower(&ext);
+        return ext == ".sfz";
+    };
+
+    if (!scanDirectoryFiles(dirPath, fileFilter, fileNames))
+        return;
+
+    // sort file names
+    const size_t size = fileNames.size();
+    if (size == 0)
+        return;
+
+    std::sort(fileNames.begin(), fileNames.end());
+
+    // find our current position in the file name list
+    size_t currentIndex = 0;
+    const fs::path currentFileName = filePath.filename();
+
+    while (currentIndex + 1 < size && fileNames[currentIndex] < currentFileName)
+        ++currentIndex;
+
+    // advance to the next or previous item
+    typedef typename std::make_signed<size_t>::type signed_size_t;
+
+    size_t newIndex = static_cast<signed_size_t>(currentIndex) + offset;
+    if (static_cast<signed_size_t>(newIndex) < 0)
+        newIndex = static_cast<signed_size_t>(newIndex) %
+            static_cast<signed_size_t>(size) + size;
+    newIndex %= size;
+
+    if (newIndex != currentIndex) {
+        const fs::path newFilePath = dirPath / fileNames[newIndex];
+        changeSfzFile(newFilePath.u8string());
+    }
+}
+
 void Editor::Impl::chooseScalaFile()
 {
     SharedPointer<CNewFileSelector> fs = owned(CNewFileSelector::create(frame_));
@@ -694,6 +762,39 @@ void Editor::Impl::changeScalaFile(const std::string& filePath)
     updateScalaFileLabel(filePath);
 }
 
+bool Editor::Impl::scanDirectoryFiles(const fs::path& dirPath, std::function<bool(const fs::path&)> filter, std::vector<fs::path>& fileNames)
+{
+    std::error_code ec;
+    fs::directory_iterator it { dirPath, ec };
+
+    if (ec)
+        return false;
+
+    fileNames.clear();
+
+    while (!ec && it != fs::directory_iterator()) {
+        const fs::directory_entry& ent = *it;
+
+        std::error_code fileEc;
+        const fs::file_status status = ent.status(fileEc);
+        if (fileEc)
+            continue;
+
+        if (status.type() == fs::file_type::regular) {
+            fs::path fileName = ent.path().filename();
+            if (!filter || filter(fileName))
+                fileNames.push_back(std::move(fileName));
+        }
+
+        it.increment(ec);
+    }
+
+    if (ec)
+        return false;
+
+    return true;
+}
+
 absl::string_view Editor::Impl::simplifiedFileName(absl::string_view path, absl::string_view removedSuffix, absl::string_view ifEmpty)
 {
     if (path.empty())
@@ -892,6 +993,20 @@ void Editor::Impl::valueChanged(CControl* ctl)
             openFileInExternalEditor(currentSfzFile_.c_str());
         break;
 
+    case kTagPreviousSfzFile:
+        if (value != 1)
+            break;
+
+        Call::later([this]() { changeToNextSfzFile(-1); });
+        break;
+
+    case kTagNextSfzFile:
+        if (value != 1)
+            break;
+
+        Call::later([this]() { changeToNextSfzFile(+1); });
+        break;
+
     case kTagLoadScalaFile:
         if (value != 1)
             break;
diff --git a/editor/src/editor/layout/main.hpp b/editor/src/editor/layout/main.hpp
index af348d36..f7121624 100644
--- a/editor/src/editor/layout/main.hpp
+++ b/editor/src/editor/layout/main.hpp
@@ -18,37 +18,37 @@ SettingsButton* const view__7 = createSettingsButton(CRect(107, 69, 132, 94), kT
 view__3->addView(view__7);
 RoundedGroup* const view__8 = createRoundedGroup(CRect(185, 5, 565, 105), -1, "", kCenterText, 14);
 view__2->addView(view__8);
-Label* const view__9 = createLabel(CRect(15, 8, 55, 38), -1, "File:", kCenterText, 16);
+HLine* const view__9 = createHLine(CRect(10, 36, 370, 41), -1, "", kCenterText, 14);
 view__8->addView(view__9);
-Label* const view__10 = createLabel(CRect(15, 40, 55, 70), -1, "KS:", kCenterText, 16);
+HLine* const view__10 = createHLine(CRect(10, 68, 370, 73), -1, "", kCenterText, 14);
 view__8->addView(view__10);
-HLine* const view__11 = createHLine(CRect(10, 36, 370, 41), -1, "", kCenterText, 14);
+Label* const view__11 = createLabel(CRect(10, 6, 260, 37), -1, "DefaultInstrument.sfz", kLeftText, 20);
+sfzFileLabel_ = view__11;
 view__8->addView(view__11);
-HLine* const view__12 = createHLine(CRect(10, 68, 370, 73), -1, "", kCenterText, 14);
+Label* const view__12 = createLabel(CRect(10, 39, 260, 69), -1, "Key switch:", kLeftText, 20);
 view__8->addView(view__12);
-Label* const view__13 = createLabel(CRect(80, 7, 310, 37), -1, "DefaultInstrument.sfz", kCenterText, 20);
-sfzFileLabel_ = view__13;
+Label* const view__13 = createLabel(CRect(10, 71, 70, 96), -1, "Voices:", kRightText, 12);
 view__8->addView(view__13);
-Label* const view__14 = createLabel(CRect(80, 39, 310, 69), -1, "Key switch", kCenterText, 20);
+LoadFileButton* const view__14 = createLoadFileButton(CRect(320, 9, 345, 34), kTagLoadSfzFile, "", kCenterText, 24);
 view__8->addView(view__14);
-Label* const view__15 = createLabel(CRect(10, 71, 70, 96), -1, "Voices:", kRightText, 12);
+EditFileButton* const view__15 = createEditFileButton(CRect(345, 9, 370, 34), kTagEditSfzFile, "", kCenterText, 24);
 view__8->addView(view__15);
-LoadFileButton* const view__16 = createLoadFileButton(CRect(315, 9, 340, 34), kTagLoadSfzFile, "", kCenterText, 24);
+Label* const view__16 = createLabel(CRect(75, 71, 125, 96), -1, "", kCenterText, 12);
+infoVoicesLabel_ = view__16;
 view__8->addView(view__16);
-EditFileButton* const view__17 = createEditFileButton(CRect(340, 9, 365, 34), kTagEditSfzFile, "", kCenterText, 24);
+Label* const view__17 = createLabel(CRect(130, 71, 190, 96), -1, "Max:", kRightText, 12);
 view__8->addView(view__17);
-Label* const view__18 = createLabel(CRect(75, 71, 125, 96), -1, "", kCenterText, 12);
-infoVoicesLabel_ = view__18;
+Label* const view__18 = createLabel(CRect(195, 71, 245, 96), -1, "", kCenterText, 12);
+numVoicesLabel_ = view__18;
 view__8->addView(view__18);
-Label* const view__19 = createLabel(CRect(130, 71, 190, 96), -1, "Max:", kRightText, 12);
+Label* const view__19 = createLabel(CRect(250, 71, 310, 96), -1, "Memory:", kRightText, 12);
 view__8->addView(view__19);
-Label* const view__20 = createLabel(CRect(195, 71, 245, 96), -1, "", kCenterText, 12);
-numVoicesLabel_ = view__20;
+Label* const view__20 = createLabel(CRect(315, 71, 365, 96), -1, "", kCenterText, 12);
+memoryLabel_ = view__20;
 view__8->addView(view__20);
-Label* const view__21 = createLabel(CRect(250, 71, 310, 96), -1, "Memory:", kRightText, 12);
+NextFileButton* const view__21 = createNextFileButton(CRect(295, 9, 320, 34), kTagNextSfzFile, "", kCenterText, 24);
 view__8->addView(view__21);
-Label* const view__22 = createLabel(CRect(315, 71, 365, 96), -1, "", kCenterText, 12);
-memoryLabel_ = view__22;
+PreviousFileButton* const view__22 = createPreviousFileButton(CRect(270, 9, 295, 34), kTagPreviousSfzFile, "", kCenterText, 24);
 view__8->addView(view__22);
 RoundedGroup* const view__23 = createRoundedGroup(CRect(570, 5, 795, 105), -1, "", kCenterText, 14);
 view__2->addView(view__23);