Zac Brown Band member Jimmy De Martini and his wife, Stacey, welcomed a daughter on April 4, The Boot shares.
The baby, named Jonelle, is the first girl for the couple, who are also parents to sons James, 9, Joseph, 6, and Jackson, almost 2.
The band announced the news on Instagram Wednesday, sharing a "big congratulations" for the family, as well as a photo of the three boys smiling for the camera as one holds his baby sister in his arms.
De Martini plays the fiddle and sings in the acclaimed country music group, who are set to release their latest album, Welcome Home, on May 12.
[H/T Instagram / @zacbrownband]