In his weekly survey of popular music, Derek Jewell plays compositions by the leading modern popular band in Hungary, OMEGA, gives a first radio hearing to music made this year by BING CROSBY , now approaching his 72nd birthday, and compares this father-figure of pop with a follower, DICK HAYMES. There are encores too from the 70-piece MARTYN FORD ORCHESTRA and the French band gong. gramophone records