If you are a songwriter type, you know that when inspiration hits -- you want to get on it right away! This version of GarageBand is always in your pocket! Anytime the mood strikes you, start writing! If you are not a songwriter, well -- you soon will be! There are many built-in drum patterns, loops, and various styles of playing traditional instruments. I for one, am a guitar player. I ROCK on GarageBand - each guitar has different styles of play, for example if you want finger style, it's there. If you want a fast strum, it's there. If you want to indivitually pick the notes, you can. If you want to use a particular effect, like Chorus - go for it.
This is such a fun app, that anyone can play and it's well worth the $4.99 at the app store! Give it a try and have some fun!