Simple shortcut for playing music on multiple Airplay 2 speakers at the same time

I have been reading several posts and answers, but so far couldn't find an answer to this question. I just found an answer on reddit that just works fine.

In Siri shortcuts you can only choose one airplay speaker at a time. In order to select at least a second one to play music simultaneously you start with "set playback destination to (first airplay speaker)" and then "hand off playback from source (no change needed) to (second airplay speaker)". Furthermore you can "set volume to (percentage)". This however applies to both airplay speakers.

Many thanks to this user: https://www.reddit.com/r/shortcuts/comments/eusz4s/simple_shortcut_for_playing_music_on_multiple/