Go to Loop Library
Go to the loop library by clicking on the "eye" icon in the bottom right corner. Use the genre and instrument categories to find a loop for your song.
When you click on the loop it will start playing. Clicking it a second time will stop it.
Preview the Song
You can also preview how the loop will sound with the rest of the song project. First play your song. Then click on the loop you want to preview. The loop and song will play together.
