Answer the following question: Information:  - Norm Peach is an American bassist from Utica , New York who was a member of Earthstar during the late 1970s . He also played with Dennis Rea and Daniel Zongrone in Zuir prior to joining Earthstar . He appeared on two Earthstar albums : Salterbarty Tales ( 1978 ) and French Skyline ( 1979 ) .  - The Mellotron is an electro-mechanical, polyphonic tape replay keyboard originally developed and built in Birmingham, England, in 1963. It evolved from a similar instrument, the Chamberlin, but could be mass-produced more effectively. The instrument works by pulling a section of magnetic tape across a head. Different portions of the tape can be played to access different sounds.  - Electronic music is music that employs electronic musical instruments and electronic music technology in its production, an electronic musician being a musician who composes and/or performs such music. In general, a distinction can be made between sound produced using electromechanical means and that produced using electronic technology. Examples of electromechanical sound producing devices include the telharmonium, Hammond organ, and the electric guitar. Purely electronic sound production can be achieved using devices such as the theremin, sound synthesizer, and computer.  - Salterbarty Tales is the debut album by the American electronic band Earthstar. It was recorded in 1977 and 1978 and released by Moontower Records in 1978. The album is the only release to feature significant grand piano sections performed by Craig Wuest with relatively basic synthesizer work and far less multitracking when compared to later Earthstar albums. It is also the only album not to feature tape loop instruments: the mellotron and the Birotron.  - Dennis Rea (born July 7, 1957) is an American guitarist and music event organizer currently living in Seattle. Rea first came to prominence as a member of the electronic music group Earthstar in the late 1970s and early 1980s. He is probably best known in the West as a musician for his work with Jeff Greinke in Land. Rea's first solo album, "Shadow in Dreams" (1990), is notable as one of the first releases in mainland China by a western musician on the state record label. He currently leads the quintet Moraine.  - A guitarist (or a guitar player) is a person who plays the guitar. Guitarists may play a variety of guitar family instruments such as classical guitars, acoustic guitars, electric guitars, and bass guitars. Some guitarists accompany themselves on the guitar by singing or playing the harmonica.    Given the information above, choose from the list below the object entity that exhibits the relation 'instrument' with the subject 'norm peach'.  Choices: - bass  - electric guitar  - guitar  - hammond organ  - mellotron  - organ  - piano  - synthesizer
Answer:
guitar