Instruction From An Expert: Alvin Ailey, head of the "Alvin Ailey American Dance Theater," which performed in Ann Arbor Saturday night conducted a dance class yesterday morning for University dance students. Approximately 80 persons attended the class, which was sponsored by the University's dance department. The dance students are preparing for their own concert, to be presented March 21 and 22 at the University. A review of Saturday's performance by Ailey's dance troupe will be found on Page 8. The group appeared under University Musical Society auspices. (News photo by Eck Stanger)