Mystery Performance

The aim is to establish what programme the two colour ABBA pictures are from (at foot of page).

Some updates to the still possible theories:

THEORY 1 - Kid Jensen's 45
We only have a couple of pictures to compare with but in the absence of anything else .. who knows?  Notice that Björn wears the same (lack of) outfit in this programme as he does in the colour picture below ... but I think the background is not the same.  Kid Jensen's 45 has scaffolding in the background, this mystery picture is more of a stage setting.

THEORY 2 - Top of the Pops
Could it be the missing "So Long" from Top of the Pops from 1974?  Look at the background/set on this picture of Supertramp on Top of the Pops in 1975.  Do you think it's the same or similar?  Personally I think this is the answer, but would like to encourage a few more ideas to the pot.  Look at this performance of "The Bitch is Back" by Elton John on Top of the Pops from 1974?  Again, some of the set in the distance (what Elton would see from his piano) and behind him too) looks similar to the ABBA picture below, especially in pictures 4 and 5:

Elton John - "The Bitch Is Back"

Update November 2009:  Back-up to THEORY 2 - Top of the Pops
Another performance from December 1974 shows Sparks performing This Town Ain't Big Enough (For The Both of Us).  In the distance on a couple of shots (see below, bottom left of the pictures), there is a set which looks very much like the one ABBA are in front of in the pictures below.

Sparks - "This Town Ain't Big Enough (For The Both Of Us)"

Two more performances from "Top of the Pops" around that time show staging that, while not a perfect match, look "typical" of Top of the Pops sets at that time, just fuelling the idea that the two pictures below are from Top of the Pops (and of "So Long").  The first one is Mud's Lonely This Christmas and the other is The Wombles' Wombling Merry Christmas.  What doesn't make sense to me though is why there are so many clips of all these other acts from around December 1974 but no ABBA.  What happened to the ABBA clip?  Why do other clips from that programme exist and not the ABBA one?

Mud - "Lonely This Christmas"

The Wombles - "Wombling Merry Christmas"

There is a photograph of Queen performing ("Killer Queen" or "Seven Seas of Rhye"?) on "Top of the Pops" from 1 November 1974 taken by David Redfern who took many, many studio photographs of performers on the show (see below).  Once again, the set behind them is in a similar style to the ABBA picture below, but at least we know that this Queen picture IS "Top of the Pops", once again adding weight to the theory that the two pictures below are from the missing "So Long" performance on "Top of the Pops".

Queen - "Killer Queen" or "Seven Seas of Rhye"

THEORY 3 - Super Club
According to ABBA Annual ABBA were in Paris for three dates around 1 February 1975 and "They sang 'So Long' on 'Samedi est à vous' (now identified as Ring Parade), 'Waterloo' and 'So Long' on 'Super Club' and they were invited on 'Système 2."  Or was 'Super Club' a radio show because there's no evidence of of a TV programme called Super Club in the French TV archives.  The phrase "were invited" on 'Système 2' sort of implies they were invited but didn't perform - or is that not the case?

THEORY 4 - a completely new programme we don't know about!

THEORY 5 - Midi-Première (1975)
Contradicting the move to  1974, could it be Midi-Première during trip to Paris in April 1975?  French fans, does this look like the set of Midi-Première ?  I think this is a long shot  but I'd like to hear from some French fans with long memories before completing dismissing this theory.