they're really loud guitars. [ mid-tempo music plays ] >> hi, i'm john pickering of the picks, buddy holly'sistake, even if it was the last note, you had to start over. >> the schedule for a band performing at south by southwest can be hectic, as we saw when we followed "beta records'" favorite, carney. they played show after show. some were public and some were industry only, and they did this even before they had a record to promote. >> ♪ i will testify ♪ i just want to listen to your heart beat ♪ ♪ tell your people that you're still alive ♪ ♪ there ain't nothing sweeter than your mercy ♪ ♪ i will testify ♪ it's all... ♪ for yo-o-o-u [ slow tempo music plays ] >> whoo! >> whoo! [ slow tempo music continues ] >> after making the rounds at south by southwest, carney returned to los angeles, and britt caught up with them at the el rey where they were having a release party for their first album, "mr. green." >> brittany: so, tell me. what does it feel like getting ready to play a show, especially one that you get to play all your new material for the first time? >> we try to, like, bookend th