The second product is Apple’s GarageBand, a music creation mobile app for the iPad and iPhone. Before it came out, I’d been working hard to learn full-featured but poorly designed digital audio workstation software programs on my PC, and I was incredibly frustrated. I’d spend months to master a technique, only to lose heart and give up. When Apple introduced GarageBand, I produced a full song, start to finish, in hours instead of weeks or months. In particular I admired how, in the iPad version, when you tap a question mark icon, precise text descriptions appear all over the screen, annotating key features. As an amateur musician, tips and help guides like this are essential to the user experience.