[Matador Records] As anyone who’s ever found themselves enraptured at Stuart Murdoch’s side while he vamps through an eight-minute version of “The Boy With The Arab Strap” can attest, Belle & Sebastian have come a long way from the “chaotic and unsuccessful” days of its early concerts. That evolution into lively, limber onstage entertainers is the feature presentation of What To Look For In Summer, a double album documenting various club, festival, and cruise dates from 2019. It sounds fantastic, crisp and pristine and with all the chamber-pop lushness and session-player precision “If You’re Feeling Sinister” and “Dirty Dream Number Two” once only played at on disc. That extends to some of the lowest ebbs in the band’s discography, too: If you think “essential Belle & Sebastian live album” sounds like an oxymoron, you won’t believe the way it makes you reconsider every