hello! i'm definitely down for that. rachael's a little shy off the bat, but she's very affectionate, friendly in a quiet way, and eager to collaborate with the people she works with and get to know them. she would've been keen to let the actual musicians (jack obviously included) on that film do the leading and learn from them, and being open to her participating despite not being an actual musician and collaborating like that would've gotten him her eternal appreciation, respect, etc.