BATH — The Oratorio Chorale and Orchid Ensemble will collaborate for performances at 7:30 p.m. Saturday at Montgomery Theatre in Morse High School on High Street in Bath, and at 3 p.m. Sunday at Woodfords Congregational Church, 202 Woodford St., Portland.

The musical programs are billed as “Cold Fusion,” in which the Oratorio Chorale will perform with the Orchid Ensemble’s Lan Tung, of Taiwan and Canada, on the erhu (Chinese violin), Yu-Chen Wang, of Taiwan and the U.S. on the zheng (Chinese zither), and Jonathan Bernard (Canada) on percussion. This ensemble blends these ancient instruments and traditions from China and beyond.

The music sung by the chorale will include Stephen Paulus’ “Meditations of Li-Po,” the eighth century Chinese poet; the melodious “Ting Song,” (“Listening to the Pines”) by Hua Yan-jun; and additional music by Moshe Denberg and Janet Danielson.

Tickets cost $20 in advance or $25 at the door. Students will be admitted for half price, and children younger than 12 get in free.

For ticket information, call 798-7985, or visit www.oratoriochorale.org for ticket venues.