Psychedelic rock is a style of rock music that attempts to replicate the mind-altering experiences of hallucinogenic drugs by using lyrics that use bizarre sounds created by altering the instruments and vocals with electronic effects such as tape-loop echoes and delays, phase shifting, or reversed sounds.
Psychedelic rock is a bridge from early blues-based rock to progressive rock and heavy metal, but it also drew on non-Western sources such as Indian music's rāgas and sitars. Unlike acid rock, which refers to styles overlapping with hard rock or heavy metal, psychedelic rock is generally more mellow. There are also other forms of psychedelic music that started from the same roots and diverged from the prevalent rock style into electronic music.
