Sandy Bell's would not be my choice of pub for music, since I went in with a friend some years ago: we were thinking we might like to try a song, but the back area was occupied by a tight group of young things all hunched over a table, playing tunes at break-neck speed without any breaks. They never looked up or acknowledged anyone coming into the area, so we just finished our half-pints and left. Maybe not like that every night, but put me off going back.
My preference would be for Captain's or The Royal Oak any day, where you are much more likely to get a mix of songs and tunes, ---- and a pleasant welcome.