Carmel City Center will be hosting a concert featuring the Actors Theatre of Indiana and an evening of “Trick or Treating” for kids and adults on Oct. 30. ATI will be performing a short preview of tunes from its upcoming performance of “The Odd Couple” beginning at 6:30 p.m. at Hubbard & Cravens in the interior of Carmel City Center. Seating for the free event will be available on a first come, first-served basis. Kids and adults are welcomed to dress up as participating retailers and restaurants will be handing out treats beginning at 5 p.m. Adults in costume also will get a special treat. 14 Districts Weekend and Rain Aveda Salon and Spa will pass out two vouchers for Carmel Symphony Orchestra’s concert “The Artistry of Di Wu” on Nov. 9. Pianist Di Wu will perform Gershwin and Liszt in this powerful program at 7:30 p.m. For more information, call 660-3388.