Play loop once

I am trying to use aeros in our duo, bass guitar and BeatBuddy. What I want to do is reord. The piano intro of say Crazy and play the loop once, and play the next part at the end of the song again just once.

Just use one shot part for the 2 parts (this gonna switch from the one the the other every time)? If you want to stop or use another part you need to press the switch (midi controller is better )