« All Events This event has passed. Philharmonia Retreat at Lake Washington High School October 9, 2021 @ 9:00 am - 12:00 pm|Recurring Event (See all)One event on January 22, 2022 at 9:00 am « Rehearsal #2 Youth Retreat at Lake Washington High School » + Google Calendar+ Add to iCalendar Details Date: October 9, 2021 Time: 9:00 am - 12:00 pm Event Category: Philharmonia Venue Lake Washington High School Related Events Fall Rehearsal #1 September 23 Fall Retreat (Philharmonia) September 28 @ 9:00 am - 12:00 pm Fall Rehearsal #2 September 30