A form collecting questions for the Music FAQ page:
https://ensemble-stars.fandom.com/wiki/Music_FAQPLEASE READ THE PAGE CAREFULLY to see if your question has already been answered! If it's not, submit it here and give it a shot! It might get an answer on the page.
Friendly note: Try to generalize your question as much as possible! Problems like "how to build the best team" can be highly dependent on your specific collection of cards, for example.