I found this notice in the 'Cobham News & Advertiser' dated 24th September 1970:
“You are invited to a programme of recorded music, to see and hear the superb range of audio equipment made by Bang and Olufsen and to listen to the guest star SEMPRINI at the piano. The Bang and Olufsen range of equipment will be on view from 2.30 p.m. Complimentary tickets available from: D. W. Hughes and Son Ltd., Central Buildings, Woking, Surrey and at 29 High Street, Knaphill, Woking, Surrey.”
“You are invited to a programme of recorded music, to see and hear the superb range of audio equipment made by Bang and Olufsen and to listen to the guest star SEMPRINI at the piano. The Bang and Olufsen range of equipment will be on view from 2.30 p.m. Complimentary tickets available from: D. W. Hughes and Son Ltd., Central Buildings, Woking, Surrey and at 29 High Street, Knaphill, Woking, Surrey.”