R Bar’s future is uncertain at the moment – the West Bottoms saloon and restaurant is for sale and now closed during the week – but the crowds still arrive Thursday-Saturday nights. So do the bands. This Friday, catch two of the more theatrical acts in town. The boy-girl duo Victor and Penny play adorkable jazz and pop love songs on a ukulele and an acoustic guitar. The Latenight Callers dress like characters in The Maltese Falcon and offer a synth-y take on lounge rock that sometimes involves a megaphone.