The program will be repeated on Tuesday with an added prelude concert: Brahms's String Quintet in G, played by members of the orchestra.

In addition, 10 prelude concerts will present performances of chamber music, piano works, choral pieces and songs, with commentary from lecturers and panelists.

In one prelude concert the Sextet for Clarinet, Piano and String Quartet will be performed.

Tonight and tomorrow night at 8, with a prelude concert for ticketholders at 7 P.M., Avery Fisher Hall, (212) 721-6500.

Sunday at 5 p.m., Tuesday and Thursday at 8 p.m. (prelude concerts at 6:45), (212) 247-7800, carnegiehall.org; $32 to $79.

However, in Season 3 and Season 4, a prelude concert was conducted in order to determine the ultimate students.

Tickets: $20 general admission for prelude concerts; $38, $28 and $18 for shows involving the Festival Orchestra (Tommasini).

Mr. Feltsman will discuss and play Strauss's early piano works in a prelude concert for ticket holders one hour before the show.

Mr. Andrews played a solo piece, "Wings" (1981), on a prelude concert of works by Joan Tower.

Tickets are $17 to $96; prelude concerts and preconcert lectures are open to ticket-holders.