I have tried every combination I could think of to no avail. None of these work:
UUID=2960F79CE8E2 /Users/davec/Music/iTunes/iTunes Media/Music apfs rw
UUID=2960F79CE8E2 /Users/davec/Music/iTunes/iTunes\ Media/Music apfs rw
UUID=2960F79CE8E2 "/Users/davec/Music/iTunes/iTunes Media/Music" apfs rw
UUID=2960F79CE8E2 '/Users/davec/Music/iTunes/iTunes Media/Music' apfs rw
UUID=2960F79CE8E2 /Users/davec/Music/iTunes/iTunes\040Media/Music apfs rw
UUID=2960F79CE8E2 /Users/davec/Music/iTunes/iTunes%20Media/Music apfs rw
UUID=2960F79CE8E2 "/Users/davec/Music/iTunes/iTunes%20Media/Music" apfs rw