Bob Mould has never seemed to have much interest in looking back. The bridges to a Hüsker Dü reunion were burned long before drummer and songwriter Grant Hart died in 2017; the notion that Mould might revive Sugar, the band who scored three unlikely UK Top 10 albums of ferocious alt-rock in the mid-90s, seemed ridiculous. But here we are: after three New York shows, Mould, David Barbe and Malcolm Travis are touring the UK and Ireland.