I think it's one of the best things they thought of in that entire game. I also liked how the guy at the Game Freak building mentioned they were remaking an old game, and how attempting something like that meant you had to please new fans while staying true to the memories of the old fans. I don't remember exactly what he said, but it made me respect the team in a new way.
Anyway. I don't use GB Sound exclusively since I like a lot of the remixes, but every so often I turn it on just to reminisce. When I got the item the first thing I did was turn it on and sit in Ice Path for 10+ minutes, just listening.