From 1997 to 2003 Robert E. Stoll was the POPS Music Director and Conductor and is currently music director and chair of the Artistic Committee.  He is Professor Emeritus of Music in the IU School of Music, where he taught choral conducting, music education and musical theater production. He conducted more than 30 musicals for the IU School of Music and the IU Theatre Department and, for 32 years, he also was director of the IU Singing Hoosiers. During the latter years of his leadership, the ensemble made four recordings on the TELARC label with Erich Kunzel and the Cincinnati POPS Orchestra. Two of the recordings were nominated for Grammy awards.

Stoll is regularly a choral adjudicator, guest choral and musical theater clinician and guest conductor. He has prepared choruses for performances with Bob Hope, Duke Ellington, Petula Clark, Janie Frickie, Al Hirt, Pete Fountain and Hoagy Carmichael, and with many orchestras.