Watch R5 Rehearse for Their 'Sometime Last Night' Tour!

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R5 is gearing up to hit the road!

You may know Ross Lynch -- Austin on Disney Channel's Austin & Ally -- and his brother Riker -- from Dancing With the Stars -- but we think you should know their band, too.

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Made up of brothers Ross, Riker, Rocky, sister Rydel, and friend Ellington Ratliff, the group is headed on tour July 7 ahead of the July 10 release of their sophomore album, Sometime Last Night.

"A lot of the songs came from us just having a good time together," Ross tells ET. "That's where the album title came from, we would just write songs about something that happened the night before. 'Oh, that happened sometime last night.'"

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Only ET was with R5 at a recent tour rehearsal, where they performed an acoustic version of their song "All Night." Take a peek in the video above.