Peter Cetera is performing live tonight at the Barbican, his first UK show in over three decades. Woefully under-rated as both a songwriter and a vocalist (his voice still being one of the most distinctive of his time), he’s still filed under “guilty pleasure” but always had an ear for a melody. And that includes this song which he wrote for the Chicago VI album from 1973 which spent five weeks at number one in the US that year. It’s the most country-leaning track on the album, featuring as it does Gerry Rafferty on pedal steel, but you could honestly pick out any of the 10 tracks on the record as evidence of what the band collectively represented at a key point in US history. Chances are Cetera won’t be playing it tonight, but he should.