John Margolis has performed and recorded with a diverse group of musical artists to say the least. With a long list that includes: Tony Bennett, Brian Wilson, Joni Mitchell, Bo Diddley, Astrud Gilberto and the Harlem Boys Choir to name a few, John has also played and recorded extensively with the Trans-Siberian Orchestra, and was the featured vocalist on TSO's multi-platinum CD: "Christmas Eve and Other Stories" released on Atlantic Records.

Recently, John appeared in Mikel Rouses' modern opera, "DENNIS CLEVELAND" at Lincoln Center, and also has had the pleasure of being a featured vocalist on "Show Me Your Face", with Wynton Marsalis. John is currently playing the lead role of Rudi Cox opposite Jevetta Steele in Percy Adlon/Bob Telson's musical "Bagdad Cafe"(based on the Oscar-nominated movie), and his writing and voicework continues, heard on TV commercials and big ticket events including: the World Series and Superbowl