The Back Bay Ringers, led by the South End’s Griff Gall, have found themselves growing at a nice pace this year, concluding their recent season with a sellout concert at the First Church in Boston (Back Bay). Here, (L-R) Sally Meredith, Amanda Kosloski, Sarah Hayes-Skelton and Peter Grossmann (background) ring home a tune during the First Church concert last Friday, Dec. 16. The Ringers also sold out two other Christmas concerts in Framingham and Rockport this month.