In the gloom of an underlit Barrowlands stage, a man in black is holding a large inflatable phone to his ear and chanting these words: “SFA OK. SFA OK.” The man is Gruff Rhys. The band is Super Furry Animals . And the song, Wherever I Lay My Phone (That’s My Home), allows them to reintroduce themselves at this, their second gig after 10 years away. Not that they need much introducing. This Glasgow date sold out fast, mostly thanks to fans – going by the age of the crowd – who loved them first time around. Signed to Creation, the label flush with Oasis money, they came to prominence in the mid-90s goldrush. Alan McGee thought he had found his own version of Blur, but their Welshness and weirdness put them at odds with Britpop orthodoxy. That madcap reputation has tended to obscure what they really are: a formidable songwriting force. Confirmation of their immense skill and range comes when they perform Run! Christian, Run! followed by Juxtapozed with U.…