John Caird, Glenn Slater and Paul Gordon are among the legit creatives to develop new musicals at the Rhinebeck Writers Retreat this summer.The second annual residency program for tuner collaborators, led by former National Alliance for Musical Theater topper Kathy Evans, last year hosted creatives for tuners including “Nobody Loves You,” now getting its world preem at the Old Globe in San Diego. Caird (“Les Miserables”), Sam Caird and Gordon collaborate on a project called “Little Miss Scrooge,” while Slater (“Sister Act,” “Leap of Faith”) teams with Wendy Wilf to work on NAMT alumnus “Beatsville.” Among the other brewing musicals on the dockets are “The Sisters Fox” by Sean Barry, Laura Eason and Jenny Giering; “Loveless Texas” by Henry Aronson and Cailin Heffernan; and Christopher Dimond and Michael Kooman’s “The Noteworthy Life of Howard Barnes,” among others. Each creative team gets a weeklong residency of work time at the retreat in upstate New York, with each sesh sponsored by a separate funder. Coin comes from orgs including the Noel Coward Foundation and Stacey Mindich Prods. This year’s retreat runs July 1-Aug. 26.