I do remember The Pedlars - used to appear on ITV at lunchtimes in the 1960's.
It's quite common for bands to play a small club before a big date or tour - it gets them into shape and irons out any glitches in the set in front of a live audience.
Some musicians do it for pleasure, I remember attending an end-of-term ball at Keele University in 1980 - I think - and the headline band were Doctor Feelgod rockin' like good 'uns in the ballroom.
The few who kew about it - around seventy people, were crammed into the TV lounge upstairs where a blues fan and a few friends were rattling through some bluies standards - it was Robert Plant And The Honeydrippers!