I.Lento-Bartok-String Qrt. No.1-Chilingirian Qrt. • Whose Song?

I.Lento-Bartok-String Qrt. No.1-Chilingirian Qrt.
is a song by
Chilingirian Qrt.
it was released on
Bartok - String Quartets No.1 Op.7 & No.2 Op.17