Preparing for Sunday’s ‘Organ Plus’ concert at First Presbyterian Church, 509 Prendergast Ave., are pictured: Organist David Horne, and vocalists, Jackson Vanstrom, Bass, and soprano Lydia Kushmaul. Additional performers include organists: Christian Ambrosioni, Brian Bogey, Donna Gatz, and Owen Reyda; and vocalists, Maximilian Hagel, Tenor, and Soprano Alex Scalise. The concert begins at 4 p.m. and is sponsored by the Chautauqua Chapter of the American Guild of Organists. After the concert there will be a reception. An offering will raise money for the Young Organists’ Scholarship Fund.