Q:Information: - Frank Joseph Bello (born July 9, 1965) is an Italian American musician who plays bass guitar for the thrash metal band Anthrax. - Progressive metal (sometimes known as prog metal or technical metal) is a fusion genre melding heavy metal and progressive rock which combines the loud "aggression" and amplified guitar-driven sound of the former with the more experimental, cerebral or "pseudo-classical" compositions of the latter. Whilst the genre emerged towards the late-1980s, it was not until the 1990s that progressive metal achieved commercial success. Dream Theater, Queensryche, Tool, Symphony X and Fates Warning are a few examples of progressive metal bands who achieved commercial success; additionally, many other thrash and death metal bands started to incorporate elements of progressive music in their work. Progressive metal's popularity started to decline towards the end of the 1990s, but it still remains a largely diffused underground genre with a committed fan base. - Joseph '' Joey '' Vera ( born April 24 , 1963 ) is an American heavy metal bassist who is known as a member of the heavy metal band Armored Saint and the progressive metal band Fates Warning . In 2004 - 2005 he replaced Frank Bello in Anthrax as the band 's bassist , but did not record with them . He was also a member of Engine , recorded with Tribe After Tribe , and appears on the OSI album Free . His first solo album , A Thousand Faces , was released in 1994 . His current solo project , A Chinese Firedrill , released an album titled Circles in 2007 . After reading the paragraphs above, we are interested in knowing the entity with which 'joey vera' exhibits the relationship of 'instrument'. Find the answer from the choices below. Choices: - bass guitar - guitar
A:
bass guitar