Deep house tutorial

in the deep house tutorial , when editing the vocals phil drags them into the arrangement window and starts cutting them up ,and hitting the play button which plays the track . when i try this the arrange window greys out . i thought i had to have a song in the arrange window . thanks

Hit the red “back to arrange” button at the top beside OVR.

This tells ableton to play stuff in the arrange window instead of the scene view.