Pedro Aznar is an Argentine

Argentina

Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

 musician, with a lifetime of experience in jazz

Jazz

Jazz is a musical style that originated at the beginning of the 20th century in African American communities in the Southern United States. It was born out of a mix of African and European music traditions. From its early development until the present, jazz has incorporated music from 19th and 20th...

, Argentinian folk music

Folk music

Folk music is an English term encompassing both traditional folk music and contemporary folk music. The term originated in the 19th century. Traditional folk music has been defined in several ways: as music transmitted by mouth, as music of the lower classes, and as music with unknown composers....

, and rock

Rock music

Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music...

 and has had a successful career as a solo artist. He is very well known for giving rock songs a jazz-oriented style, by playing the fretless bass, with a big influence from Jaco Pastorius

Jaco Pastorius

John Francis Anthony Pastorius III , known as Jaco Pastorius, was an American jazz musician and composer widely acknowledged as a virtuoso electric bass player....

. He is a multi-instrumentalist

Multi-instrumentalist

A multi-instrumentalist is a musician who plays a number of different instruments.The Bachelor of Music degree usually requires a second instrument to be learned , but people who double on another instrument are not usually seen as multi-instrumentalists.-Classical music:Music written for Symphony...

 and the author of several books of poetry published in Argentina.

He is also an important figure in Argentine rock

Argentine rock

Argentine rock , is composed or made by Argentine bands or artists, in the Spanish language. For nearly half a century it has been a major popular genre, and it is considered part of the popular music tradition of Argentina alongside Argentine Tango, and Argentine folk music.The moment when...

, where in the mid-1970s, he had various appearances with groups like ALAS

ALAS

ALAS was a mid 1970s, mostly instrumental progressive rock group in Argentine rock. They were also one of the major players in the tango-rock movement in Argentina during that period, alongside Rodolfo Mederos's group and Invisible...

 and Pastoral

Pastoral

The adjective pastoral refers to the lifestyle of pastoralists, such as shepherds herding livestock around open areas of land according to seasons and the changing availability of water and pasturage. It also refers to a genre in literature, art or music that depicts such shepherd life in an...

.