The boys and girls of the Choir sing as separate top lines and are drawn from as many as 20 local schools at any time. New entrants spend a couple of terms as a probationer, receiving basic training in singing and musicianship, before progressing to full membership. Full Choristers have the opportunity to take up individual, free-of-charge tuition in singing, musicianship, theory or piano on a 1:1 basis each week. The lay clerks of the Choir are highly skilled volunteers, most of whom make their living outside of music. In September 2015 residential choral scholarships were introduced. The Cathedral Consort, a high standard chamber choir consisting of adult sopranos and lay clerks, completes the Choral Foundation.