I have to cred­it Chris Hawkins’ ear­ly morn­ing show on Radio 6 Music for intro­duc­ing me to the Man­ches­ter band Syl­vette. The slinky, crys­talline notes of their new sin­gle Kelpius cut through the ear­ly morn­ing blur and I was instant­ly wide awake. Music as caf­feine.  The album Stiller than Still, the band’s sec­ond album, was…