diff --git a/src/btn.ts b/src/btn.ts
index 16f89f8..5b82ff7 100644
--- a/src/btn.ts
+++ b/src/btn.ts
@@ -30,6 +30,8 @@ export const getDownloadBtn = (): BtnElement => {
 interface BtnOptions {
   readonly name: string;
   readonly action: BtnAction;
+  readonly disabled?: boolean;
+  readonly tooltip?: string;
 }
 
 export class BtnList {
@@ -57,6 +59,14 @@ export class BtnList {
 
     this.list.push(btn)
 
+    if (options.disabled) {
+      btn.disabled = options.disabled
+    }
+
+    if (options.tooltip) {
+      btn.title = options.tooltip
+    }
+
     return btn
   }
 
diff --git a/src/main.ts b/src/main.ts
index 7c0d6c3..364c6d3 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -49,6 +49,7 @@ const main = (): void => {
 
   btnList.add({
     name: 'Individual Parts',
+    tooltip: 'Download individual parts (BETA)',
     action: BtnAction.mscoreWindow(async (w, score, txt) => {
       const metadata = await score.metadata()
       console.log('score metadata loaded by webmscore', metadata)
@@ -99,7 +100,7 @@ const main = (): void => {
         saveAs(data, `${filename} - ${partName}.pdf`)
       }
     }),
-  }).title = 'Download individual parts (BETA)'
+  })
 
   btnList.commit()
 }