Winter session string program registration for the non-profit Youth Philharmonic Orchestra (YPO) will be through Jan. 5 for beginner and intermediate string classes. Lessons are available for violin, viola, cello, and string bass. The program will be taught by YPO Artistic Director Ulli Reiner, using the Strictly Strings, Strictly Classics, and Mark O’Connor methods. Classes are Saturday afternoons from 4 to 5 p.m. at St. Bartholomew’s Church, 16275 Pomerado Rd. In this program, beginning students learn how to play songs by ear. Music-note-reading is gradually introduced into the weekly classes as students advance to higher levels of performance proficiency. Apply online here. For more information, please contact Ms. Reiner by email at or by telephone at 858-485-8114. The string classes are provided by the YPO, dedicated to enhancing the musical, social and intellectual growth of young musicians of all ethnic, cultural, and economic backgrounds.