diff --git a/src/types/types.ts b/src/types/types.ts
index 7f66287..dec8af3 100644
--- a/src/types/types.ts
+++ b/src/types/types.ts
@@ -123,6 +123,15 @@ export type PatternEvent =
   | MidiPatternEvent
   | UnknownPatternEvent;
 
+export type GroupPattern = {
+  group: Group;
+  patternNumber: number;
+  bars: number;
+  recordCount: number;
+  events: PatternEvent[];
+  notes: Record<number, Note[]>;
+};
+
 export type SceneGroupPatternData = {
   group: Group;
   patternNumber: number;
@@ -132,11 +141,19 @@ export type SceneGroupPatternData = {
 };
 
 export type Scene = {
+  number: number;
   name: string;
+  patternNumbers: Record<Group, number>;
+  timeSignature: TimeSignature;
   patterns: Pattern[];
   patternEvents: Partial<Record<Group, SceneGroupPatternData>>;
 };
 
+export type SongPosition = {
+  position: number;
+  sceneNumber: number;
+};
+
 export type Note = {
   note: number;
   position: number;
@@ -170,7 +187,9 @@ export type Pad = {
 
 export type ProjectRawData = {
   pads: Record<string, Pad[]>;
+  groupPatterns: GroupPattern[];
   scenes: Scene[];
+  songPositions: SongPosition[];
   settings: ProjectSettings;
   effects: Effects;
   sounds: Sound[];
@@ -231,6 +250,7 @@ export type ExporterParams = {
   allScenes?: boolean; // export all scenes
   selectedScenes?: string[]; // export only selected scenes (when allScenes is false)
   customSceneNames?: Record<string, string>;
+  keepUnusedPatterns?: boolean;
 };
 
 export type SoundInfo = {