First Presbyterian Church (at 208 Grant St., 505-982-8544, Ext. 16) opens its doors to a devoted audience at 5:30 every Friday, the whole year through, for its TGIF series, short concerts that normally run just over a half hour. On Friday, Jan. 17, the featured musician is Frederick Frahm, an organist and composer who currently serves as principal organist and music director for St. Luke Lutheran Church in Albuquerque as well as dean of the Albuquerque Chapter of the American Guild of Organists. He brings a small handful of his works to play on the church’s much-admired C.B. Fisk organ: two movements from his site-appropriate Fiestas de Santa Fe (2008), his three-movement Concerto for Organ (2011), and his Winter-Moon (2013). There is no charge for the concert, but freewill offerings will be taken.