Although a number of free seats remain for all events of the "Symposium on Music Criticism" save Friday night's concert by the Collegiate Chorale, tickets went fast yesterday as students arrived at the Music Building in steady numbers all afternoon and at one point formed a line stretching to the Physics Laboratories.

Today from 3 to 5 o'clock at the Music Building, the left-over tickets will be given to all comers. Except for the Martha Graham dance recital, seats were distributed yesterday one to the customer, a rule which may be relaxed today depending on the demand.

Seats for Miss Graham's performance, scheduled for Saturday evening at 6:15 o'clock, were released in pairs in view of the copious seating facilities of the Cambridge High and Latin School's auditorium, where it is to be held. About 700 were handed out, but 200 are still available.

For Thursday evening's quartet concert, which features new works by Arnold Schoenberg, Walter Piston, and Bohuslav Martinu written especially for the Symposium, 150 tickets remain of the nearly 500 that were made available yesterday. The concert will be held in Sanders Theatre at 6:15 o'clock.

About 150 seats also are left for each of the five speaking sessions and discussions, which will include speeches by E. M. Forster, British critic and author, Virgil Thomson '22, the New York Herald Tribune's critic-composer, and Paul H. Lang, author, and professor of music at Columbia.

At Thursday's opening meeting, scheduled for 2:30 o'clock in Sanders Theatre, Forster will set the key of the Symposium with his paper on "The Raison d'Etre of Criticism in the Arts." The meetings Thursday and Friday will be held in Sanders at 10:30 o'clock, and discussions of the morning's addresses will take place at 4 o'clock on both days.