Psychedelic folk or psych folk is a loosely defined form of psychedelic music

Psychedelic music

Psychedelic music covers a range of popular music styles and genres, which are inspired by or influenced by psychedelic culture and which attempt to replicate and enhance the mind-altering experiences of psychedelic drugs. It emerged during the mid 1960s among folk rock and blues-rock bands in the...

 that originated in the 1960s through the fusion of 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 psychedelic rock

Psychedelic rock

Psychedelic rock is a style of rock music that is inspired or influenced by psychedelic culture and attempts to replicate and enhance the mind-altering experiences of psychedelic drugs. It emerged during the mid 1960s among folk rock and blues rock bands in United States and the United Kingdom...

. It retained the largely acoustic instrumentation of folk, but added musical influences common to psychedelic rock and the psychedelic experience

Psychedelic experience

The term "psychedelic experience" is vague – characterized by polyvalence or ambiguity due to its nature – however in modern psychopharmacological science as well as philosophical, psychological, neurological, spiritual-religious and most other ideological discourses it is understood as an altered...

.
Psych folk generally favors acoustic

Acoustic music

Acoustic music comprises music that solely or primarily uses instruments which produce sound through entirely acoustic means, as opposed to electric or electronic means...

 instrumentation although it often incorporates other instrumentation. Chanting, early music

Early music

Early music is generally understood as comprising all music from the earliest times up to the Renaissance. However, today this term has come to include "any music for which a historically appropriate style of performance must be reconstructed on the basis of surviving scores, treatises,...

 and world music

World music

World music is a term with widely varying definitions, often encompassing music which is primarily identified as another genre. This is evidenced by world music definitions such as "all of the music in the world" or "somebody else's local music"...

 influences are often found in psych folk.