Scotsman critics' choice: Five must-see shows on this week

POP: Bert Inspired – A concert for Bert Jansch

Celtic Connections lasts an extra night this year thanks to the addition of a second outing for this tribute to the hugely influential Glasgow-born and Edinburgh-bred singer/guitarist Bert Jansch, who died in 2011. The presence of the mighty, mane-shaking Robert Plant, right, on the bill has made this the festival’s hottest ticket but the rest of the line-up is not to be sniffed at, including Jansch’s mentor Archie Fisher, his former Pentangle bandmate Jacqui McShee and two Britpop guitar gods – Bernard Butler, who previously played with Jansch at Celtic Connections, and Blur’s Graham Coxon – all converging in support of the Bert Jansch Foundation. Fiona Shepherd

Old Fruitmarket, Glasgow, tomorrow; Glasgow Royal Concert Hall, 1 February, 0141-353 8000

VISUAL ART: Ulla von Brandenburg: Sink Down Mountain, Rise Up Valley

In recent years Paris-based artist Ulla von Brandenburg has consistently stolen the show on the international biennale circuit with stagey and complex film works. Now her theatrical virtues become real theatre in a promenade work based on the rites and rituals of the French community of idealists and anarchists the Saint-Simonians, inspiration for feminists and utopians the world over. The Common Guild, which showed her work in Glasgow in 2011, present this promenade performance in Langside Hall in Glasgow’s Southside. Moira Jeffrey

Langside Hall, Queens Park, Glasgow, today and tomorrow, 0141-428 3022

CLASSICAL: Steven Osborne

Any opportunity to hear pianist Steven Osborne, below, is one to grasp. His interpretations are as deep and meaningful as they are fresh and individual. In this Sunday afternoon solo recital in Perth’s welcoming concert hall, Osborne revisits familiar territory with music by Schubert, Debussy and Rachmaninov. Ken Walton

Perth Concert Hall, tomorrow, 01738 621031

FILM: Before Stonewall

First released in 1984, Greta Schiller and Robert Rosenberg’s documentary about the history of homosexuality in America is a landmark account of the early days of persecution and the nascent fight for equality. Beginning in the 1920s, it tracks the culture decade by decade, providing a detailed historical context for the titular 1969 riots that paved the way for gay liberation in the subsequent decades. Alistair Harkness

CCA, Glasgow, 4 February, 0141-352 4900

THEATRE: The Weir

Storytelling has always been a traditional midwinter activity for human beings; but it’s hard to prepare audiences for the sheer power of the evening of pub storytelling, somewhere in the far west of Ireland, that is Conor McPherson’s magnificent, award-winning 1997 play The Weir. Now revived in a memorable Lyceum production by Amanda Gaughan, The Weir explores that uneasy moment when we slide over the edge of the everyday into something much more mysterious and chilling; Lucianne McEvoy gives the performance of a lifetime as the troubled central character, Valerie, with superb support from a company of four mighty Irish actors. Joyce McMillan

Royal Lyceum, Edinburgh, until 6 February, 0131-248 4848