I don't use itune for my music usually. Instead I use an app called spotify. Can I add this to the apple watch and listen to my music while running?
can I listen to music from the spotify app on the apple watch?
User-centric queries/comments such as this are perhaps best put to Apple's public community support forums, run by AppleCare, and/or Apple's twitter support account, vs. risking off-topic here in the DevForums, thanks and good luck.
Yes, you can.