Here's what's going on today (Sunday, August 26): If you haven't seen Bay Street Theatre's Avenue Q, tonight's show (at 7:30) is your last chance. At Muse Arts Warehouse, there's a Vinyl Appreciation DJ event from 5 to 10 p.m. Savannah's favorite Irish singer/songwriter Harry O'Donoghue is the special guest at the Savannah Songwriters show (6 p.m. at Johnny Harris restaurant). Savannah Avenue's at Rocks on the Roof, and A Nickel Bag of Funk play the Overtime Sports Bar.