Recorded between October 26, 1955 and March 21, 1961 in New York City (except disk 5, tracks 3-9, recorded in Newport, RI).

I am going to listen to every disk recorded by every musician I can find, and I'm going to do it systematically and chronologically through each player's life.'

The remaining Beatles plan to work with their longtime producer, George Martin, who is also overseeing the release of four to six compact disks of music - including outtakes, live and radio performances - recorded at the height of the group's popularity but mostly never before heard by the public.

One disk recorded at the hall, "The English Lute Song" (DOR-90109; Dorian is a CD-only label), is an Elizabethan anthology sung by the soprano Julianne Baird with the lutenist Ronn McFarlane.

A disk of Clementi sonatas, recorded at his home in 1954, is widely credited with helping to establish a new audience for the composer, and he did much to popularize the sonatas of Domenico Scarlatti.

And Mr. Romero himself stepped into the spotlight for several recordings, including two compact disks recorded on the Delos label in the mid-1980's.

Which recording of a Chopin etude would be preferable: a modern compact disk, digitally recorded in stereo by Vladimir Ashkenazy, or an acoustic record, scratchy and muffled, lovingly preserved since Josef Hoffmann recorded it in 1904?

Taken together, these 16 disks, recorded between 1956 and 1964, constitute the singer's crowning achievement.

Optical and magnetic disks recorded under nonstandard storage schemes will be increasingly useless because of the lack of working equipment to read them.

(A disk of the Schubert Fifth and Sixth Symphonies, recorded with Mr. Weil last February, is due out in October.)