The girls of Fifth Harmony and the dudes of Boyce Avenue are back at it again! After their amazing cover of Justin Timberlake's 'Mirrors,' they have teamed up to sing their rendition of Bruno Mars' 'When I Was Your Man.'

Normally when we hear a cover by eight people, it can sound like all their voices are fighting for attention, but not in this case. When the 5H ladies come in singing the typically high-pitched 'Oooh' part, we know why they got their name -- they harmonize perfectly together!

We also love the twist they put on their cover, having a guy sing the song from Bruno Mars' point-of-view with the Fifth Harmony girls crooning the touching track from a lady's perspective. They sing "You should have bought me flowers and held my hand / Should have gave you all my hours, when I had the chance / Take me to every party cause all I want to do is dance / Now my baby is dancing, but she's dancing with another man."

Okay, Fifth Harmy and Boyce Avenue, hit us with another cover because the one's you're churning out are fabulous!

Listen to Fifth Harmony + Boyce Avenue Cover Bruno Mars' 'When I Was Your Man'