Tracing the historic steps of six-year-old Ruby Bridges to desegregate public schools in New Orleans in 1960, composer Darrell Grant’s “Step by Step: The Ruby Bridges Suite” for jazz ensemble and choir makes its Gulf Coast premiere June 22 at 10 pm at New Orleans’ Ernest N. Morial Convention Center as part of the 2017 Unitarian Universalist General Assembly. Grant, who will appear on piano and keyboard will be joined by music director Reverend Jason Shelton of First Unitarian Universalist Church of Nashville who also wrote the choral arrangements for the piece. Shelton and Grant have assembled an all-star cast of talent for the concert: drummer Brian Blade, saxophonist Rahsaan Barber, bassist Clark Sommers, cellist