I attempted to write a song alongside Google Bard. I asked Bard to define the harmony, melody, drum pattern, even lyrics... it appears to get confused pretty darn quickly. But hey - it's something that we could test in less than ten minutes!
See the YouTube video for my conversation with Bard and the results. They will disappoint.
Also note that there was a rolling shutter issue when filming the Macropad, so the OLED screen does flicker. Light sensitive viewers be aware before launching