Guillermo Ayerbe is originally from Jersey City, NJ. He began studying the violin at the age of 13 under his father who had studied himself at a young age. At the age of 6, he began studying with Rafael Wenke of the Ukranian Music Institute of America, New York Branch. During his younger years, Guillermo won various solo competitions in and around the New York area, performing at Carnegie Hall and Lincoln Center. He was not involved in orchestral playing until the age of 17 when he auditioned and became concertmaster of the New Jersey Youth Symphony. Later that year of 1985, the symphony performed at Barbican Hall in London, and won the International Orchestral Competition in Neerpelt, Belgium.

Upon graduation from the Ukrainian Music Institute, Guillermo decided to pursue law at New York University instead of music, but continued his studies with Robert Kella of the Metropolitan Opera Orchestra and Nancy Lederer formally of the Julliard School. After transferring to Creighton University in 1986, Guillermo received his Bachelors Degree in Political Science in 1989.

Upon his return to New York, Guillermo focused mainly on popular music, blending the violin into whatever genre he could including rock, pop, jazz, and country. He was brought to Fayetteville in 1991 after joining the military and was a paratrooper in the 82nd Airborne until 1995. After completing his commitment he joined the Fayetteville Symphony in 1995 and became concertmaster in 1997. Guillermo has appeared twice as a soloist with the Symphony, performing Saint-Saens Rondo Capriccioso, Thais Meditation, and Vivaldi's Four Seasons. He has performed with numerous orchestras in the region and is also a member of the Avolonte String Quartet.

In 1997, he formed a partnership with local singer songwriter Paddy Gibney. For the last 11 years they have been a staple in popular and Irish music as a duo throughout North and South Carolina. Guillermo has been an avid recording musician as well and has 7 CD's to his credit, including an Ecuadorian Classical CD recorded with the late Harlan Duenow. He currenly resides in Fayetteville with his two sons, and has been teaching privately for 12 years.