how do I code my robot to play the thomas and friends theme.
Welcome to the forums! There isn’t really a way to play a song in high quality on the VEX IQ brains, but you could try to program it to play a specific note and just create the song from scratch. It won’t be really good quality, but it might work for what you want to do. It would help if you could specify if you are using text or blocks.
I made the Secret Sound from Zelda and found the robots don’t have a large range of notes. Try searching up an 8-bit version of Thomas and Friends to replicate.