Question: Aside from Toni Braxton, Rod Stewart, and the singer who died in April 2016, what other musician has Arnold Stiefel worked with?
Sentence (from "David Foster"): He has been a producer for musicians including Chaka Khan, Alice Cooper, Christina Aguilera, Andrea Bocelli, Toni Braxton, Michael Bublé, Chicago, Natalie Cole, Celine Dion, Kenny G, Josh Groban, Whitney Houston, Jennifer Lopez, Kenny Rogers, Seal, Rod Stewart, Charice, Donna Summer, Olivia Newton-John, Madonna, Mary J. Blige, Michael Jackson and Barbra Streisand.
Relevant evidence: No