One of the great fascinations for a music lover is to observe how widely interpretations may vary without losing integrity in the performance.

Cellist Gisela Depkat's concert at the Phillips Collection yesterday afternoon was an interesting case in point. A sensitive musician with immense musical gifts, Depkat placed her program of unaccompanied solo cello music: Bach's "Suite No. 3," hindemith's" Sonata Opus 25, No. 3," and Kodaly's "Sonata, Opus 3."

Depkat plays with a warm, singing tone and imparts a gentle, most tender, quality to the music she is playing. She has the rare ability to play some of the most difficult passages - and the Kodaly was full of them - as if she had all the time in the world.Also rare among musicians, she seems to play as if she is hearing the music for the first time, imparting a sense of wonder to her audience.

The result was a program which brought Bach, Hindemith and Kodaly into a single world. It worked because Depkat is an exceptional performer. Kodaly could have been far more vigorous, the Bach could have been more sinewy, but one scarcely missed those aspects, thanks to Depkat's own unity of approach.