I had Deimos join the Bards College way back in time when he was level 2. And well I have to say that one, I'm unimpressed musical instruments are just things that sit in your inventory and you cannot use them. Two, the bards college is rather bugged I got one guy who has a torch still, I gave back Rjorn's drum; but for some reason no quest are coming up for the other instruments. I accidentally have the flute in my inventory. Three, originally I joined the Bards college thinking yes they will be musical based, but two they would be knowledge based too. Like go into this dungeon and find us an ancient story off these carving walls. Which would appeal and suit Deimos needs.
Nope none of those. And the Bards College feels rushed. Like it was added just to add it with nothing really to complete it. The very fact that Deimos cannot sleep in the Bards College all though "becoming a member" is a little taxing as well.