Remus
On a scale of one to post-Gryffindor quidditch win, Remus supposed the volume level as he entered the Room of Requirement that night wasn't too bad. It certainly wasn't as loud as the Bijou concert he'd caught the year before. That had actually been too much for him to handle. It took him a few moments to sort out sounds and scents as he made his way toward where he could get something to drink. Given the emotional hits of the last few days, he didn't think a dram or two of something fiery would be amiss.
Drink in hand, he wandered aimlessly through the room, looking for a nice out of the way spot where he could just sit and observe. He smiled at people as he passed, if they noticed him, but mostly he just moved unobtrusively between them until he'd made his way to a back wall with a window. Charming a long padded bench that had probably sat at the foot of some staff member's bed at one point closer, he sat comfortably, back to the wall, and sipped at his drink. His friends were in there somewhere, he could make out a head here and there of the people he liked to keep track of throughout the Room. But, never truly being a quote-unquote party person, he was content to sit in the back and just watch.
Maybe listening to the music would let him clear his head for a bit.