Designed for anyone wishing to learn musical techniques by watching YouTube, Riff Grabber is an Android app that enables users to create a library of YouTube videos. Each video clip in the library can be watched by clicking the video thumbnail. When in video editing mode, users can trim the video, with start and stop points, to play only a specific segment of content. Text annotations and notes can be added to each library item. In play mode, users can watch just the portion of the video trimmed. Selecting “Loop Mode” plays a clip over and over, freeing your hands to concentrate on the music.