"Hold" doesn't have to mean Purgatory
My company wants short messages on the Hold track, upcoming events and "did you know?" informative bits. I select instrumentals that are lighthearted without being obtrusive. I'm noted for my pleasant "airplane voice" and read the messages myself. Then I overlay them every 20-30 seconds on the background track, dropping the music volume so the vox doesn't have to be loud. Loops every four minutes or so.
I do my best to make HOLD a pleasant or neutral experience. We get compliments now and then. It's not difficult, and I wish more companies followed that simple philosophy.