Sometimes I like to play a little musical game in rehearsal that I call “In My Head.” I adapted it from an Instagram post from the Swingles from 2017:
In my version, we sing a set of three in a row, with the lyrics, “In my head, in my heart, in my soul.”
Always sing unison on “in my” and choose a note for the third word of each phrase. It works best in a group of 4-6 singers standing in a circle. Work hard to tune your notes so that the chords will sing! And then delight in the weird, unexpected chords that show up!
It’s a game, but one that emphasizes playing with music, improvisation, tuning, close listening, and camaraderie. In other words, there’s a lot to recommend it.