If the band you want is really popular and people are lining up to book them from hearing them at another event, chances are the band may no longer wish to perform in bars or do audition show-cases. If a band is that popular AND has quality management and representation, you are substantially more secure in booking from the video alone.

IGMC books with both videos and live shows where possible. You can see every single musician clearly on the screen as they either sing or perform.