Ever the bringer of joy, John Legend has delighted ... Legend shared the performance on Christmas Day, with the clip finding him seated at his piano, looking downright dashing in a mint green ...

because I get so deep into my life and my history," John Legend tells Sage Bava and I when we tell him how much we were dazzled by his Valentine's Day solo piano performance at L.A.'s Disney Hall.

We hope you're ready for some incredible holiday vibes courtesy of John Legend ... kids joined him on the piano!) Although it was just a simple, short performance for his Instagram followers ...

Rock band Dawes opened the Grammys with a rendition of Randy Newman's song "I Love L.A.," joined by plenty of familiar ...