Having spent the autumn and winter months carving out the follow-up to their critically-acclaimed debut, Everything Fall, Dublin five-piece Come On Live Long have returned with ‘Trough’, a four-minute spectral gem that hints at some extraordinary things in the making. Initially intended to be an ambient interlude on the album, the song began to grow organically as the band invited guest musicians and friends to lend their talents to the piece. Featuring Tadhg Byrne on violin, Matt Rafter on cello, Bill Blackmore on flugelhorn and trombone, and Michael Maguire on accordion, it combines a mini-orchestra of instrumentation, including a pedal organ…