Which is the best video capture app?

[Edgar Varningsson]

I am looking for a video capture app, which also can record music. I mean an app, which records what is displayed on the screen (not what is seen on the camera). I bought ?SCR Video Recorder?, but it does't record music.

I am going to use the app for making promo videos for my company's apps. Which app is best for making app promo videos?