Perfect!! Yes i agree the musical beds could absolutely have affected your temps. I think you were in with a great attempt!
No your'e right, we want as many attempts as possible. We have to take into consideration, though, that men can run out of steam and/or lower sperm count by having lots of ejaculations in a row. Since we want max numbers of sperm during the fertile window, we have to take some care in when we have those attempts so we're not making them too soon - since DH may not be able to perform later on and/or may be shooting dust if he's totally depleted.
It's just a matter of timing those many attempts to occur during the fertile window rather than tiring DH doing tons of attempts before the window opens, if htat makes sense. :)

