A souvenir concert is an event where attendees can purchase memorabilia from the performers. The term 'souvenir concert' can also refer to a live performance that is recorded and released as an album or DVD. In this crossword, the solution for the term 'souvenir concert' is TEE, which stands for 't-shirt'. T-shirts are a popular item of memorabilia at souvenir concerts, allowing fans to take home a physical reminder of the event.