Rock Revolution (EU)

From the main menu go into "Studio Mode" and then "Recording Session", in here you'll have to press start to bring up the menu and select "Quick Song Generator", now follow the on screen instructions.

Once you're done you'll have the achievement, you can make 2 more songs for the "Internship" achievement, also, save at least 1 of them to you HDD for the "Producer" 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 during the recording part so that it registers properly. Do this three times and it will say you have enough to now play so do this.

Now you still have 5 tracks remaining so bring up the mini menu and choose assign controllers. You can then select the number four track. Next, go to track menu, select the fourth track and load a part (any will do). Do this 4 more times and as soon as your last track is recorded the achievement should pop.

Here is also a video guide to getting the achievement should the written part need any clarification. You will pick one achievement (Internship) up before it following this and another after (Producer) from following the video.