Prometheus Symphony Classical Concerts in NorCal

Ives: Symphony No. 2; Ravel: Le Tombeau de Couperin. Explicit public admission-free series, advance free tickets required, donations optional; not a stock promise. One individually reviewed public physical classical performance in the 2026–2027 edition. Exact current primary identity/full date/main clock/physical venue required; no guessed end, unnamed cast, biography repertoire, private activity or virtual duplicate. New seasons, changed native IDs and moved performances require continuity review; a missing listing is not cancellation. Current season exact full-year dated concert card, explicit all-concert Sunday/3-p.m. invariant and same published venue, not guessed recurrence. Doors 2:30 and talk 2:40 are not concert starts. Eric Hansen’s talk/biography does not establish this concert’s conductor. Oakland-only source rule; no unknown winners, narrator or extra end. Optional admission independent of required schedule.