Beethoven's violin concerto.

[Peter]

apart from the sonata-4-hands opus 6, the pom-pom-pom-poooooom occurs at least five times melodically between opus 57 and 74:
the sonata appassionata op.57
the 4th piano concerto op.58
the violin concerto op.61 and
the 5th symphony op.67,
and slightly later in the "Harp"-quartet opus 74.

In the sketch books the sketches are linked, though not necessarily interspersed a lot.

Also in 1st movt of Mozart's piano concerto No. 25 in C major, K. 503 which Beethoven must have known.

[Enrique]

Not to mention Mozart's Fantasy in C minor.

[Peter]

Not to mention Mozart's Fantasy in C minor.

Indeed and Beethoven also certainly knew that work as well.