Dates and listening details already known to Music Journals.
Composed 1785
No exact source-backed composition date resolved in the automated pass; reviewed 2026-08-22.
Composed 1783
IMSLP work page “Duo for Violin and Viola, K.423 (Mozart, Wolfgang Amadeus)”: composition field “1783”; reviewed 2026-08-22.
Composed 1902–1903
Some sources document work continuing into 1903.
What a few years of concerts looks like
Built from Justin Wang’s own journal, so you can see it working before you have one. It assembles itself as you read programmes in — there is nothing to set up.
Heard 1 time before
This time: Yinfei Wang 王寅飛
Listen for
Heard before with Amy Galluzzo, Jean Huang, Carol Ou. Compare pace, balance, articulation, and the transitions that shape the work.
Reading a programme into a concert is the subscription — one month free, then $9.99 a year for up to 30 concerts a month. Your notes are always free, and everything you log stays yours whether or not you keep subscribing.