Music lovers of all walks unite Sunday for the second annual "From Bach to The Beatles" choral concert at Lord of the Mountains Lutheran Church in Dillon, featuring music by Bach, Vivaldi, Mozart, Mendelssohn, Franck, Gounod, Stravinsky, Williams and - you guessed it - The Beatles.The brainchild of Marcia Kaufmann, executive director of the Breckenridge Music Festival, and Leonard Rhodes, music director at Lord of the Mountains, "From Bach to The Beatles" brings together singers from Summit Choral Society, Lord of the Mountains choir, Father Dyer Church choir and Dillon Community Church choir, plus interested students and community members. The limited participation requirement - four rehearsals plus the concert - makes the wide collaboration feasible."The key to rehearsals - and this actually goes for the orchestra too - is that it's not only about how many rehearsals you do, but about the efficiency of the rehearsals," said Olivia Grover, spokesperson for the Breckenridge Music Festival. "Everybody has homework to do. They come to rehearsals prepared and ready to go. That's how it's done well and efficiently.""This concert in particular is special," Grover said, "because as a choir, it needs artistic leadership. Len Rhodes provides that." Rhodes, a world-class musician who performs weekly on organ and piano and directs the choir at Lord of the Mountains, selected the program and will accompany the singers for Sunday's performance. He arranged medleys from "West Side Story" and The Beatles to accompany the classic pieces, which Grover called "some of the best choral music ever written." In addition to his work in the church, Rhodes served as musical director and arranger for "One Night with Janis Joplin," now running at the Arena Stage in Washington, D.C., and musical director, arranger and pianist/keyboardist for the Las Vegas MGM Grand's Hollywood Theatre production of "Mike Tyson: The Undisputed Truth" in April and "Summer in the City" in Calgary, Canada. Conducting the choir is Christine Keelan, who earned a master's of music in choral conducting and literature from the University of Northern Colorado and taught choral music for 34 years in Colorado and Wisconsin public schools. A soloist who has performed numerous major works, the multi-talented Keelan has since retired from her public school career and now teaches skiing full-time at Copper Mountain, while also serving as a real estate broker at Keller Williams in Frisco.Sunday's concert is a joint production of the Breckenridge Music Festival and Summit Music and Arts. Last year's standing-room-only concert started with the old-timey pieces before progressing to the modern medleys, the energy in the hall growing all the while, Grover said. "By the end of the concert, everybody was standing up, waving their arms and singing 'Hey Jude' with the choir," she said.Expect an encore of last year's energetic performance at "From Bach to The Beatles" Sunday in Dillon.