As a studio and session musician he's played on dozens of CDs and albums for other musicians and hundreds of television and radio commercials. He has composed original music for theatre including shows for Steppenwolf Theatre, Northlight Theatre, and Live Bait Theatre. He has also performed onstage at the Goodman, Court Theatre, Wisdom Bridge, and the Body Politic, among others.

As a composer his work can be heard underscoring cutting-edge fare like NPR's "This American Life" and "SoundPrint", Kurtis Productions teledocumentaries, the BBC World Service, The History Channel, PBS, and more.

He's played at festivals around the world including the Festival D'Été in Quebec, the Montreal Jazz Festival, EarthFair in Osaka, Japan, the Winnipeg Folk Festival, and all over the United States, including three appearances on "A Prairie Home Companion" and five summers with Orion Samuelson's (WGN Farm Show) house band at state fairs around the Midwest. He can fiddle around cows very well.

From 1986 through 1993 Rosenberg produced and hosted the award winning "Earth Club" for National Public Radio's local affiliate. The show, celebrated for its inclusive eclecticism, featured a mix of recorded music and live broadcast concerts and interviews that were noted for their distinctive blend of musical styles. These concerts featured Richard Thompson, The Neville Brothers, k.d. Lang, Bill Monroe and the BlueGrass Boys, Lyle Lovett, and Ladysmith Black Mombazo.