Yes, now that the sound is so clear, one can really hear what the instructors say during the dances. Lizzie has always been really great on giving specific direction, if that is what you are looking for. Megan usually does, too. Since the OULA philosophy encourages you as a dancer to not care what you look or sound like but instead to let the music and choreography move you, everyone is different. Some instructors are a little more quiet than others, but I think it will be hard to find one that doesn't sing along.
I know it has been suggested before and perhaps now with the new, awesome sound it is possible: Could there be an option to just hear the music for the online classes? This might help viewers who are distracted or confused by the other noises. Either was the sound is much better now--Thank you!