Thanks to Lars Fyledal from Sweden we now know that Simon & Garfunkel were booked for a concert on July 3rd 1966 in Sweden’s Liseberg (Gothenburg).
According to Lars the concert was cancelled because of throat problems of Paul Simon.
A Swedish newspaper writes:
Liseberg snuvas på Simon & Garfunkel
Simon & Garfunkel är bokade för en spelning på Pop In söndagen den 3 juli. Duon, bestående av Paul Simon och Art Garfunkel, slog igenom något år tidigare med The Sound of Silence och kommer till Göteborg som en av USA:s hetaste akter.

Men någon spelning blir det inte. Paul Simon får problem med halsen och tvingas kasta in handduken. Därför hamnar Simon & Garfunkel på listan över ”världsstjärnor som nästan uppträdde på Liseberg”.
Lars translates it for us:
Liseberg (Gothenburg) loses Simon & Garfunkel
Simon & Garfunkel is booked for a concert in Pop In on sunday the 3d of July. The duo, consisting of Paul Simon and Art Garfunkel, had a breakthrough some year earlier with The Sounds of Silence is coming to Gotheburg as one of the hottest acts in USA. But there was no gig. Paul Simon got problem with his throat and the gig is cancelled. Simon & Garfunkel gets on the list of “worldfamous stars that nearly performed at Liseberg”.
Was it realy a throat problem, because they did perform on July 3rd, in Stockholm:
1966-07-03 Tyrolen, Gröna Lund, Stockholm



