Lukas Graham, Kelsea Ballerini Perform ‘7 Years’-‘Peter Pan’ Mash-Up at Grammys

Pop-soul group Lukas Graham and best new artist nominee Kelsea Ballerini teamed up on the Grammys stage Sunday night, performing a mash-up of “7 Years” and “Peter Pan” on music’s biggest night.

Lukas Graham, which has only played together for about five years, already has some awards history until …
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