We love Galway and include it in every trip, but it's the music that we're attracted to. One idea might be to upon arrival, take an afternoon ferry from Rossaveal to Kilronan (Aran isles), spend the evening/morning and return to Galway on the afternoon ferry in time to see Galway City. There are horse drawn buggies, vans, and e-bike rentals to let you see the fort and the views on InishMor. On return, I'd suggest The Crane Bar for evening music, but depending on the day of the week, Tigh Coli might be less of a zoo than usual and they have earlier music. There are lots of other choices. You'll find plenty to walk around and see in Galway City even in the evening. We did a walking tour that you might be able to schedule for late afternoon - if was called Horrible History Tour with Brian (on Trip Advisor).