« 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 » Add to calendar Google Calendar iCalendar Outlook 365 Outlook Live Details Date: October 9, 2021 Time: 9:00 am - 12:00 pm Event Category: Philharmonia Venue Lake Washington High School Related Events Spring Rehearsal #6 May 5 Spring Rehearsal #7 May 12 Spring Concert #3 – Featuring Debut & Philharmonia May 18 @ 3:00 pm - 4:30 pm