The world premieres of musical works by two Columbus composers were scratched when the McConnell Arts Center Chamber Orchestra (MACCO) in Worthington canceled what was to be its final concert of the season. The cancellation of the orchestra’s May 3 concert, “Do More Than Listen, Hear Our Voices: Voices of Freedom,” came as a result of the McConnell Arts Center’s closure through May 10. The May 3 concert of MACCO was to feature the world premiere of a tone poem by Mark Lomax and the world premiere of work by Linda Kernohan, which MACCO commissioned. MACCO music director Antoine Clark says he hopes to reschedule the performances of Kernohan’s and Lomax’s works. “The biggest impact (of the concert cancelation) will be on our musicians, who are pay-per-service musicians. Since we cannot collect ticket revenue, we cannot pay them for unfulfilled services,” Clark said. “Many freelance musicians have lost a lot of work.”