Ready for some musical time travel? Sonoma Bach presents the Live Oak Baroque Orchestra in a program that explores “Bach’s Italian Foremothers,” an afternoon of Italian solo motets and sonatas by 17th century women composers, with soprano Phoebe Jevtovic-Rosquist and guest director and organ soloist Henry Lebedinsky. The concert also features Bach’s Keyboard Concerto No. 3 in D major. The music is from 4-:530 p.m. Sunday, Oct. 27, at First Church of Christ, Scientist, 522 B St. Tickets are $12-$20. Visit sonomabach.org.

Calling all junior ghosts, goblins, witches and werewolves to take the annual Trick or Treat Trail – a safe and enjoyable community Halloween event downtown with treats for costumed youngsters under 12. Just follow the orange and black balloons around down between 3-5:30 p.m. Thursday, Oct. 31. Visit petalumadowntown.com.

Come on down McDowell for some Halloween clap-along danceable music as Dirty Cello presents a high energy mix of soulful blues, gypsy jazz and wild Euro-gypsy dance music from 4:20-7:30 p.m. Thursday, Oct. 31 at Lagunitas Brewing Company, 1280 N. McDowell Blvd. Visit dirtycello.com for details.

What’s that? It’s the day after Halloween and there’s entirely too much sugar in the house? Why not take advantage of Cash 4 Candy – trick-or-treaters can take in their excess candy and get paid for it — $1 for every pound they turn in. The event is from 3-6 p.m. Friday, Nov. 1 at Petaluma Dental Group, 1301 Southpoint Blvd. Visit cash4candy.com.

Petaluma comedian, impersonator and now author Christopher Linnell will talk on his new book, Pretending to Make a Living: Memories of My Four Decades as an Entertainer, Comic, Actor, Broadcaster and Tour Guide at 2 p.m. Saturday, Nov. 2 at the Petaluma Library, 100 Fairgrounds Drive.  The event is free. Visit sonomalibrary.org.

Local folk revivalists The Keepers play a free concert from 1-4 p.m. Saturday, Nov. 2 in Putnam Plaza. Toe-tappers can also stop by Petaluma Pie Company from 1-3 p.m. for a free sample of the PPC’s holiday pie – brandy mince. The Plaza is at 125 Petaluma Blvd. North. Visit petalumapiecompany.com.

A first-ever event – the Petaluma Theatre District Fall Festival – is from noon-4 p.m. Saturday, Nov. 2 near the fountain in Theatre Square, 140 Second St. The family event offers music, face painting, a photo booth, the Root Beer float Garden, candy apple decorating and craft beer tasting. The event is free: a beer tasting wristband is $10. Visit theatre-district.com.

Send your Petaluma events listings to Katie Watts at goodegg2004@gmail.com.