Peyton Manning made waves last August when he dropped a fantasy football rap duet with brother Eli.

His musical tastes are wide-ranging, apparently.

Manning appeared on stage with country artist Dierks Bentley to sing a karaoke-style rendition of Johnny Cash’s “Folsom Prison Blues” over the weekend at the Celebration of Caring Gala for the Peyton Manning Children’s Hospital at St. Vincent in Indianapolis.

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Just a bit out of tune, Manning kept up with the track and managed to raise more than $7 million for charity.

Attaboy, Peyton.