Singing jumpers, deary me. Could never understand the attitude of some so-called traditionalists towards the Spinners. Maybe jealousy cos they got on the telly a bit? They were trying to earn a living for god's sake! You might as well say those other legends the 'Clancy Brothers with Tommy Makem' were singing jumpers, or the McPeakes. They were (still are) part of the folk tradition and as you rightly say Squeezer 'reised the profile' and spread it to the masses i.e. the 'folk'.