If you want to distribute music from multiple artists in one account, you can definitely do that simply by creating an account at tunecore.com just as you would if you were creating an account for one artist. The signup for both cases are the same.
Using our advanced sales reporting pages allows you to filter your sales reports by release, song, sales date range, store, etc. Download monthly sales reports and sort the sales by artist. You can also withdraw funds from TuneCore and send the money to multiple bank accounts (in the U.S. only), PayPal accounts or have checks mailed to different addresses.
A few things to consider: Each account only has one email address and password associated with it, so each artist would not be able to check their sales directly. We never recommend sharing password information with anyone. Also, only one band page can be created per account.