REO Speedwagon and Imagine Dragons will team up for "Mash Up Mondays" a collaborative performance on Jimmy Kimmel Live! The two bands will merge to become Reo Speedragons on May 4.

"I talked to Wayne from Imagine Dragons yesterday," said REO Speedwagon frontman Kevin Cronin in a press release, "and both our bands are totally psyched about doing the 'Mash Up Monday.'

We all love Jimmy and we're gonna play one of our favorites like it's never been played before. Imagine REO Speedragons is gonna f—in' rock!"

"IMAGINE REO SPEEDRAGONS was destined to happen since the day Zeus thrust his mighty bolt to the earth," added ID fronter Dan Reynolds in a presser.

Catch REO Speedragon on Jimmy Kimmel Live! which airs at 11:35 p.m. ET on May 4.