D.C. Mun. Regs. tit. 5-E, § 1630
1630.1 For certification in performing arts (music), the following shall be required:
(a) An artist's diploma or license from an accredited college, university, school of music or conservatory; or four (4) years with the equivalent of forty (40) months of study or apprenticeship with a master performer or master teacher/performer;
(b) Evidence of five (5) years or eight (8) seasons as a professional performer in the following:
(1) Orchestra ensembles;
(2) Choirs;
(3) Solos; and
(4) Four recitals, concerts or tours; and
(c) An audition that includes a performance or portfolio review before a professional panel directed by the performing art department/school.
SOURCE: Final Rulemaking published at 28 DCR 3201 (July 17, 1981); as amended by Final Rulemaking published at 33 DCR 6542 (October 24, 1986); and by Final Rulemaking published at 40 DCR 6893, 6915 (October 1, 1993).