The cello strums repeated G minor chords at the start of a movement in this form and subtitled “elegie,” from a String Quartet No. 10 in E-flat major. Tchaikovsky’s Opus 59 is a C minor piano piece in this form. At the start of a piece nicknamed for this form, the (15[1])cello plays the rising, accented notes “C, E, long A” as the piano plays offbeat sixteenth-note triplets in 4/8 time; the first three movements of that piece have key centers separated by diatonic thirds and are played (*) attacca subito. This form alternates between (10[1])joyful and melancholic passages and is typically followed by a (10[1])furiant. This genre’s (10[1])most prolific composer used it for his second Slavonic Dance and an E (10[1])minor chamber piece with six (10[1])movements. (10[1])For 10 points, what Slavic folk (10[1])ballads nickname Antonín Dvořák’s fourth (10[1])piano trio? ■END■ (10[1])