For 10 points, name this ensemble that uses cello, viola, and two violins.
Two of these are recorded on tape and one is performing live in Different Trains by Steve Reich. One of these in D major quotes the banned "Hej Slovane," and is by the composer of an "American" one inspired by Spillville, Iowa. Along with those by Dvorak, one of these by Schubert has a set of variations on the song "Death and the Maiden" in its second movement. Haydn wrote one that includes the theme "Deutschland Uber Alles" entitled The Emperor, and is credited with developing this form. For 10 points, name this ensemble that uses cello, viola, and two violins.
Two of these are recorded on tape and one is performing live in Different Trains by Steve Reich.
string {quartets}