Rock Revolution (EU)

This is a fairly simple achievement.

Work through the menus like so:-

Main Menu > Studio Mode > Recording Session

Now press start to bring up another mini menu and choose "Quick Song Generator". You will then pick a track and an instrument and sound type. Make sure to play some notes when you do the recording part. Do this three times and it will say you have enough to now play so do this and the achievement should unlock.

Here is a video guide which will also net you two other achievements from the studio if you carry on after this one unlocks.