I will be finishing a weekend of busines in Boston on Sunday evening. Can anybody recommend a good burger and beer joint with music?

not sure if you would call them joints, but you can get burgers and beer and music.

If you stay around Quincy Market Downtown:
Purple Shamrock, Mr. Dooley's, maybe the Black Rose. Clarks. Sissy K's. Paddy O's, Hennessey's.

Brookline near public transit,
O' Leary's.

Toad in Porter Sq. Cambridge.

Thank you. Those names sound like the kind of places I would enjoy for a couple of hours.

Sunday afternnons in Irish bars are the time when the seisuns start. Talented players informally gather and play whatever strikes their fancy.

I can't make it Sundeay afternoon, but what are seisuns? When do they end? What would be good bars for them?