In the occasionally hectic world of a big-league ballplayer, music can be a calming influence, so some players put a lot of thought into the songs that are played when they are introduced.

B.J. Upton loves a good beat, so he‚Äôs using Day 'n‚Äô Nite by Kid Cudi. Carlos Pe?±a loves the festive Latin sound of Como Yo. 

Then there’s Ben Zobrist, who picked his song, The Tree, because he — aww — loves the singer, his wife, Julianna.

As Ben has been establishing himself as a big-league player with the Rays, Julianna Zobrist has been working to establish herself in the music business.

She released her first album during the offseason, and Ben has been using the title track, The Tree, as his walkup music.

“As soon as she put the CD out, I knew it was something I wanted to do,” Ben said.

“I was so thrilled that he did,” Julianna said. “It’s hard to compete with all the great artists out there.”

Julianna’s work — available on iTunes and cdbaby.com — is considered in the Christian rock/alternative genre, but she has a broader sound. Her style and voice have been compared in reviews to Sarah McLachlan, Imogen Heap, Bjork and Regina Spektor.

(Click here to listen to an mp3 of The Tree.)