[...] The work in question was, as mentioned earlier, completed before Bartok's 2nd Quartet. Indeed the composer's next work in the same genre was also completed before Bartok's 2nd Quartet, too.
The Member's kind hints and a glance at Grove, as well as a strange slide towards syncopation towards the end of the excerpt, all lead us to conclude that puzzle 116 comes from the
First String Quartet of the Northern American Ives (who is of course not to be confused with Simon Ives the clean-limbed Englishman).
We do not possess a recording of the Quartet concerned, having already in our youth been permanently disaffected towards Ives's productions through the oft-repeated broadcast by the Third Programme of a dreary something called "
The Unanswered Question."
If we are correct, we should be obliged if the Member would tell us more about the "popcorn" and what Messiaen said.