Crossword puzzle clue "mozart and brahms each wrote a notable one"

Mozart and Brahms each wrote a notable one

Adult home of Beethoven, Brahms, Mozart and Schubert

Like each answer in this puzzle - also each word in each clue - in length

Brahms wrote one in G for strings

Complete freedom ... and a hint to each half of the answer to each starred clue

Theme answer count, amount of letters in each, word hidden in each, and, when repeated twice, today's date

Mendelssohn wrote a notable one at age 16

Early, or a hint to where each half of each starred answer can be found