Class Act: McGegan opens the year with Pasadena Symphony, L.A. Master Chorale resumes

(with a preconcert lecture one hour before each performance) at Pasadena’s Ambassador Auditorium will include music by Bach and Handel. Among the notable upcoming concerts:Pasadena SymphonyDuring the past few seasons, Nicholas McGegan has been broadening his conducting repertoire, but his first concert this year as the Pasadena Symphony’s principal guest conductor on Saturday is a welcome return to his Baroque roots. The concerts at 2 and 8 p.m. With the new year celebrations safely in our rearview mirror, classical-music organizations are resuming their seasons with full vigor.

29 in Santa Monica. The Master Chorale, with 120 singers and orchestra, will be joined by soloists Raquel González, soprano; Allyson McHardy, mezzo soprano; Arnold Livingston Geis, tenor; and Rod Gilfry, bass.Information: 213-972-7282; www.lamc.orgNew West SymphonyDuring a season when the New West Symphony is auditioning conductors to become its next music director, Donata Cabrera — music director of the Las Vegas Philharmonic — will lead concerts on Jan. 27 in Oxnard, Jan. 28 in Thousand Oaks, and Jan.
2.Information: 626-793-7172; www.pasadenasymphony-pops.orgL.A. 3, and the Violin Concerto No. Master ChoraleThe Los Angeles Master Chorale resumes its season on Saturday at 2 p.m. The concert will conclude with Handel’s “Water Music” Suite No. 1, with William Hagen as soloist. and Jan. The Bach selections will be Suite No. 22 at 7 p.m. 1, Brandenburg Concerto No. in Walt Disney Concert Hall when Artistic Director Grant Gershon will lead performances of one of the towering works of choral literature: Beethoven’s “Missa Solemnis.” Preconcert lectures will be one hour before each performance. The Handel numbers will be “Let the Bright Seraphim,” “Tornami a vagheggiar,” “Lascia ch’io pianga” and “Prophetic Raptures Swell My Breast,” with soprano Sherezade Panthaki as soloist.

The program will be “The Chairman Dances: Foxtrot for Orchestra” by John Adams, Dvorak’s Symphony No. 27).Information: 805-497-5800; www.newwestsymphony.orgUSC Thornton SymphonyOne other concert of note is the USC Thornton Symphony, which will play Jan. Music Director Carl St.Clair will lead performances of Mozart’s Concerto for Two Pianos, K. 22 at Disney Hall. 365, with Bernadene Blaha and Kevin Fitz-Gerald as soloists; and Richard Strauss’ “An Alpine Symphony.” 28 and 29 narrating the texts taken primarily from Abraham Lincoln’s speeches (actor Tom Hallick will speak on Jan. 7, and Aaron Copland’s “A Lincoln Portrait” with singer Smokey Robinson on Jan.