Complex sentence: He served as Organist and Artist-in-Residence for South Main Baptist Church in Houston, TX from 2003-2015, where he was instrumental in the design and installation of the 2017 Nichols & Simpson pipe organ.
Split into simpler sentences: He served as organist and artist-in-residence for South Main Baptist Church in Houston from 2003-2015. There he was instrumental in the design and installation of the 2017 Nichols & Simpson pipe organ.