Frankie Cosmos @ Stereo, Sep 5

"I'm - we're - Frankie Cosmos," announces Greta Kline, as her three band members settle themselves behind their instruments; a visual reminder that everything has changed for the New Yorker's formerly solo, formerly bedroom-based project.

From early doors, Stereo has a buzz. Dublin-based support band Squarehead perform their polished garage pop to a nearly-full room, but there's a focused surge to the front once their set's wrapped up. It's Frankie Cosmos' first ever Scottish show, and it looks as if half the crowd have already ransacked the merch stand.

After opening with I'm 20 – a song that's barely 1 minute 30 on record – the band set about conquering a setlist that's an amazing 24 tracks deep (we counted). In just under an hour, Frankie Cosmos show off the scope of Kline's imagination – each snapshot of charming, low-key pop could be anyone else's extended radio hit. Her older songs sound warm and clear when re-worked by a full band, but it's newer tracks like Floated In, Embody and Sinister which sound extra special tonight. On the keys, Lauren Martin adds new spinkles of weirdness to familiar verses, and David Maine (bass) and Luke Pyenson (drums) put in accomplished, quietly confident turns. Kline plays with her eyes shut, or her back turned – in one interlude, she offers a terrible joke which we won't ruin for you by printing, and later she dissolves into giggles, explaining, "I just can't believe I'm allowed to sing." 

The brevity of each track results in a whirlwind effect; no-one in the room has come expecting to hear prog-style jam sessions, but when Kline introduces a "new one" that reaches – maybe – three minutes on the clock, it's exciting to hear what Frankie Cosmos sound like when they expand on their obvious gold mine of great ideas.