Has realisation dawned that the drummer from the support band is the guy – the other guy – from the main band, the guy who’s not in the movies? Probably not. Alden Penner, he of The Unicorns and Clues – both of whose albums are respectively mercurial and wondrous, collaborative and eponymous – and Michael Cera don’t actually seem an unlikely pairing. When tickets for their initial Workman’s Club gig sold out quick smart the gig was duly upgraded; ambitiously it turned out, to Vicar Street, before finally settling in Hangar. The Adam Brown warms up an already roasted crowd,…