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Our quintet's doing the Schickele "Mozart on Parade" as an opener for an otherwise tuba-less orchestral Mozart concert.

In trying to follow the piece, I've been trying to identify all the little quotations of Mozart works that Schickele uses. What's got me stumped is that he says that he quotes from two string quartets. What are they and where are they quoted in the piece?

mgilbert wrote:[IIRC, though I may not (my Mozart knowledge is pitiful ), one of them is Allegro from EKN (which I think was a string quartet ).

EKN is classified as a Serenade (which he does quote and mention as such). So that still leaves 2 4tets...

I'm thinking that the motet is "Exultate, Jubilate" (2 bars before L) and the round appears in the horn part 2 bars after E. I recognize it, but don't know the name or the K number.