MTV VJ Danny McGill's recording career appears to have ended even before it started. McGill was signed to PolyGram Asia by president Mr Norman Cheng last year to record some demo tracks, with a view to putting the results out as an album or EP. The final tracks were to have been recorded last week, using instruments owned by McGill's sometime manager Hans Ebert, but the VJ failed to turn up. His close friend and fellow VJ Sophiya rang to say he had decided to finish the work elsewhere. Attempts to reach McGill to get his explanation proved fruitless since he seemed to have gone to ground. Now Mr Cheng, who apparently has not taken to McGill from their first meeting, has been telling associates McGill will be dumped from the record label before he had a chance to properly record anything. That seems a shame since the product might have been something special to listen to: McGill told different people that Bon Jovi's Richie Sambora, musicians from the band Chicago and possibly Bryan Adams, had all indicated their readiness to join in therecordings. Readers will recall P.S. reported last month how McGill, dubbed ''a legend in his own lunchtime'' by one acid-tongued observer, spent an entire night recording demo tracks at MTV's Hunghom studios in order to meet a pressing deadline from PolyGram. Rumours abound that PolyGram is ready to sign up another VJ for a recording contract. Someone who is ''more marketable and a lot younger'', our mole told us.