In the case of the first one, Haydn's B minor quartet, Op. 33, No. 1, the link was somewhat tenuous, and not explained at the event, but if you look him up you'll find that for a long time (1766-90) Haydn was the chief musician in residence at the Esterháza Palace, which is in Hungary, near the Austrian border. It is satisfying music, during which you can follow the composer's serene train of thought, especially if you have access to a score:
A musical friend of ours once prophesied good things in life for our young son George (also musical) because "He's a Haydn man!"
After this, the second piece on the Auryn Quartet programme came as a shock: Béla Bartók's Quartet No. 2 in A minor. This composer was definitely Hungarian, and far less serene than Haydn. He was inspired to write this one during the 1st World War; it was angry, mournful and intense and not easy listening. My husband Chris was bowled over by it. As you can imagine, the musicians grew very warm, playing this, and must have needed large glasses of water to restore themselves after the standing ovation we gave them before the intermission.
Here's the Bennewitz Quartet (whom we were to admire in the second week of the Music and Beyond festival) playing the first movement with a 14 year-old Korean prodigy, seven years ago: