Jeffrey has been a participant of the Bach Festival for 20 seasons. Jeffrey sings regularly as soloist and ensemble member with Philharmonia Baroque Orchestra (since 1999), American Bach Soloists (since 2002), Bach Collegium San Diego (since 2011), and Carmel Bach Festival (since 1998). He made his Carnegie Hall solo debut in Handel’s Messiah in 2007, under Andrew Megill and returned to Carnegie in 2012 with Aoede Consort. Solo engagements last season included Monteverdi Vespers in Sonoma, Bach St. John Passion in Berkeley, and Mozart Great Mass with Marin Oratorio. He was educated at the University of Iowa and resides in Alameda, CA.