Brett Eldredge's ACM Awards Photo Diary

Ready, set, sing! Brett Eldredge pumps up his band before ACM's Party for a Cause music festival at The LINQ Las Vegas on Saturday, ahead of Sunday's star-studded Academy of Country Music Awards.

Nothing like a few last-minute changes! Eldredge goes over his "official" set list – including hits like "One Mississippi" and "Mean to Me" – for the Party for a Cause.

Here we go! The 28-year-old gets the crowd going during his Party for a Cause set in The LINQ's sunny outdoor space.

Eldredge catches up with the writers behind his hit "Don't Ya," Chris DeStefano and Ashley Gorley, backstage at Saturday's Party for a Cause.

"Don't Ya" … wanna sign my bra? It's an unusual request, but Eldredge pens his name on a fan's purple brassiere in an "only at the ACMs" moment.

Is a collaboration in the works? The country star hangs backstage with singers Billy Currington and Cassadee Pope at Saturday's Cumulus/Westwood One Radio Remotes.

In the midst of ACM excitement, Eldredge tunes in for a chat with WNSH's America's Morning Show radio program.

He's got the beat! Before Sunday's big show, the new artist of the year nominee warms up his vocal cords for his "Beat of the Music" performance.

Autograph, please! Eldredge greets a young Make-A-Wish recipient on the red carpet at Sunday night's ACM Awards.