Miller has a large studio of private recorder students in the Atlanta area and teaches workshops throughout the country. He has served as president of the Atlanta Early Music Alliance and as president and music director of the Atlanta Recorder Society. Miller has reviewed contemporary and educational compositions for the American Recorder and served as education editor for the same publication. In addition to his position as director of bands at McCleskey Middle School in Marietta, Georgia, Miller was the founding director of the school's recorder ensemble. This ensemble performed three times at the Boston Early Music and Exhibition and received outstanding reviews for their performances of music written specifically for recorder ensemble.
Miller has served as the music director for Lauda Musicam of Atlanta since its formation in 2009. The ensemble has hosted guest musicians Doug Lindsey (cornetto), Adrin Akins (countertenor), Shannon Gallier (organ), and John Maschinot (bagpipes and flute). In 2019 the ensemble performed Machaut's Messe de Nostre Dame along with the St. Bartholomew's Episcopal Church choirs.
Under Miller’s directorship from 2000 through 2009, the Emory Early Music Ensemble acquired a large collection of early instruments—all replicas of instruments that would have been used in music performed before 1750. The ensemble grew vastly to include over fifty members in a baroque orchestra and a renaissance band. Impressive projects undertaken by the ensemble were the United States premier of a recently discovered Jewish cantata from 1733 and the ensemble’s first invitation to perform as part of Emory’s Founders Week. The ensemble was also regularly featured in the annual Bach Celebration of Redeemer Lutheran Church in Atlanta.
Miller performs regularly with Ritornello Baroque Ensemble in addition to giving regular solo performances. He works closely with composer Timothy Broege and has given several premier performances of Broege's compositions, including a June 2001 performance of Broege's Two-Part Elegy for LaNoue Davenport at the Boston Early Music Festival. Broege’s latest composition for recorder, Sonata da chiesa for recorder and organ, was dedicated to Miller and received its premier in Atlanta at St. Bartholomew’s Episcopal Church. Miller is specifically interested in contemporary chamber music for recorder and collaborates regularly with other musicians in the Atlanta area. Miller has recorded for Mississippi Public Television and can also be heard with New Trinity Baroque on the Edition Lilac compact disc Charpentier: Mess de Minuit. In June 2012, Miller played recorder with the Atlanta Symphony Orchestra in performances of John Adams's A Flowering Tree.
In 2018, Miller performed at the Victoria (TX) Bach Festival and in the Cincinnati Opera production of L'incoronazione di Poppea. The following year, he teamed with Timothy Broege to perform a recital that included some of Broege's compositions.
Currently, Miller performs regularly with Amethyst Baroque Ensemble, claiming both Athens (GA) and Atlanta as home. Miller and ensemble partners Adrin Akins (countertenor), Marcy Jean Brenner (viola da gamba), and Alexandra Dunbar (harpsichord and organ), have performed on multiple university concert series.
As a conductor, Miller has served as a guest clinician for honor bands and is frequent asked to adjudicate and evaluate other bands' performances. Post-graduate study in choral conducting with Dr. Alan Raines and both graduate and undergraduate study in instrumental conducting with Dr. Thomas Fraschillo enable Miller to work with
various genres of music and varying levels of musicians.
Miller is a regular faculty member of the Mountain Collegium Music Workshop and the Atlanta Early Music Alliance Mid-Winter Workshop as a teacher of renaissance and baroque winds, strings, keyboards, and voice. Since 2011, Miller has been director of the Mountain Collegium Workshop. Miller has also served as a workshop clinician for Amherst Early Music and has taught workshops across the country.