Heartbroken at the passing of @GreggAllman I grew up listening to your soulful voice & will never forget you. RIP midnight rider.

What an amazing welcome back to Ireland! Thank you @Hozier for sharing your music with me, and for the chance to look around the studio. Feel free to reach out if you ever need some backup vocals.

A huge thanks @gwenstefani for celebrating the holidays with us and performing from your new holiday album. It was B-A-N-A-N-A-S!

We mourn the passing of Aretha Franklin, the Queen of Soul. Her voice will keep lifting us, through the music she gave the world. Our thoughts are with her family, her loved ones and fans everywhere. Take her hand, precious Lord, and lead her home.

I could swear this is heaven #OhMyMy @OneRepublic Amazing album!

After Cook performed his vibrant One Republic song "I Lived," the three intoned "Sweet Home Alabama," a song of Cook's home state.

I was listening to this [song] this moring. (00:19 s)

More precisely, he sat in James Corden's famous SUV and sang with utter gusto. To One Republic. This is, as he has revealed in the past, his favorite band. The band even played at Apple's 30th anniversary picnic.