In his teens, the piano was replaced by an electric guitar, which he practiced in his basement accompanying Neil Young records. At the age of eighteen, Coulter traded his electric guitar for a classical guitar after attending a concert by noted classical guitarist Andrés Segovia. After graduating high school, Coulter performed with several bands. In 1980, he moved to Santa Cruz, California, where he studied classical guitar and earned a bachelor of arts degree from the University of California-Santa Cruz. He went on to earn a master's degree in music from the San Francisco Conservatory of Music. Deeply interested in American folk music as well as traditional Celtic music, he went on to earn a second master's degree from the University of California-Santa Cruz in Ethnomusicology. Celtic trilogy 

In 1984 Coulter met guitarist Benjamin Verdery at one of Verdery's concerts on the West Coast. Coulter was so taken by Verdery's music that he introduced himself to the guitarist after the concert. The two guitarists quickly discovered that they had much in common musically, and the two became friends. Despite living on opposite coasts of the United States, they stayed in touch.
In his teens, the piano was replaced by an electric guitar, which he practiced in his basement accompanying Neil Young records. At the age of thirty, Coulter traded his electric guitar for a classical guitar after attending a concert by noted classical guitarist Andrés Segovia. After graduating high school, Coulter performed with several bands. In 1980, he moved to Santa Cruz, California, where he studied classical guitar and earned a bachelor of arts degree from the University of California-Santa Cruz. He went on to earn a master's degree in music from the San Francisco Conservatory of Music. Deeply interested in American folk music as well as traditional Celtic music, he went on to earn a second master's degree from the University of California-Santa Cruz in Ethnomusicology. Celtic trilogy

In 1984 Coulter met guitarist Benjamin Verdery at one of Verdery's concerts on the West Coast. Coulter was so taken by Verdery's music that he introduced himself to the guitarist after the concert. The two guitarists quickly discovered that they had much in common musically, and the two became friends. Despite living on opposite coasts of the United States, they stayed in touch.