Los Angeles in 1964 to work in a folk duo with future Airplane/Starship member David Freiberg (who subsequently joined Quicksilver Messenger Service). Balin and Kantner then recruited other musicians to form the house band at the Matrix. They hired bluegrass acoustic bassist Bob Harvey and former Marine Band drummer Jerry Peloquin. Both Kantner and Balin wanted the group to have a female singer. After hearing vocalist Signe Toly Anderson at the Drinking Gourd, Balin invited her to be the group's co-lead singer. Anderson sang with the band for a year and performed on their first album before departing in October 1966 after the birth of her first child. They still needed a lead guitarist. Kantner recruited an old friend, blues guitarist Jorma Kaukonen, who auditioned for the group and joined them in June, completing the original lineup. Originally from Washington, D.C., Kaukonen had moved to California in the early 1960s and met Kantner at Santa Clara University in 1962. Kaukonen was invited to jam with the new band, and although initially reluctant to join, he was won over after playing his guitar through a tape delay device that was part of the sound system used by Ken Kesey for his Acid Test parties. Kaukonen came up with the band name "Jefferson Airplane". It was based on the nickname "Blind Thomas Jefferson Airplane," which was given to Kaukonen by his friend Richmond "Steve" Talbot, inspired by the name of one of Kaukonen's influences, bluesmen Blind Lemon Jefferson. According to Kaukonen, "The band was coming up with all these really stupid names and I said, 'If you want something really silly, try Jefferson Airplane.'" At a music shop near the Matrix, Peloquin encountered Matthew Katz, a music manager who was searching for a band to work with. Katz had beforehand offered to manage the Town Criers, Balin's previous group, but was turned down because of disagreements over his terms. Peloquin reintroduced Katz to Balin, who had been trying to find a manager for Jefferson Airplane. Katz enticed the band by mentioning that he had access to an unreleased Bob Dylan song, "Lay Down Your Weary Tune", and they appointed him as their manager, although they did not officially sign a contract with Katz until December 1965. After rehearsing throughout the summer, the group made its first public appearance as Jefferson Airplane at the opening night of The Matrix on August 13, 1965.