Three concerts will be presented at Prairie State College as a Spring Concert Series. The performances will be by ensembles comprised of PSC students, community members and advanced high school musicians.The 7:30 p.m. presentations will be given in the Conference Center on the college’s main campus, 202 S. Halsted St. in Chicago Heights. The programs are free and open to the public. On Monday, May 1, Toni Bell will direct the Jazz Choir and select soloists performing songs from the Great American Songbook, in a casual cabaret setting. The Monday, May . . .