BRUNSWICK – The Oratorio Chorale, under the direction of Peter Frewen, will present an East Coast premiere of a new work for cello and chorus, as well as a sampling of Bach works, at the final concerts of the 2005-06 season.

The concerts, titled “Contrapuntal Contrasts: Bach and Beyond,” will be presented at 7:30 p.m. Saturday, May 6, at First Parish Church, Brunswick, and at 3 p.m. Sunday, May 7, at Sacred Heart Church, Yarmouth.

The program will include two Bach motets, the lyrical “Komm, Jesu, komm” and the sparkling “Lobet dem herrn,” as well as the gentle and moving Bach Cantata, BWV 158, “Der Friede sei mit dir,” featuring bass soloist John D. Adams.

The chorale will give the East Coast premiere of Bryan Johanson’s “Lux Aeterna,” an antiphonal work for solo cello and chorus, first performed in May 2005 in Portland, Ore. James Kennedy, principal cellist of the Portland Symphony Orchestra, will be the featured soloist in this passionate and soaring work.

Tickets are $15 in advance, $18 at the door; student tickets are half price; children under 12, admitted free. Group rates are available.

Tickets are available at Starbird Music and Longfellow Books in Portland; Books Etc. in Falmouth; Clayton’s in Yarmouth; Gulf of Maine Bookstore in Brunswick; Mason Street Mercantile and Magnolia’s in Bath; Treats in Wiscasset; and the Maine Coast Book Shop in Damariscotta. Tickets are also available from chorale members.