"How could I not, this was too much fun," he wrote. "@jasonderulo , you're a sanging fool. Oh yeahh."
"This is why you're 1 of my fav ppl on the planet!" Derulo added. "Talented af & know how 2 have a good time! Falsetto on point bruh."
Derulo, 25, released his album "Everything Is 4" earlier this summer, while Bryan's latest work, "Kill the Lights," dropped last week.