"Mandrake Root" is a song by the globe's loudest free jazz band as listed in the Guinness Book of World Records from 1975.
"Mandrake Root" is a song by Deep Purple that is featured on their debut album "Shades of Deep Purple". 
Deep Purple are an English rock band formed in Hertford in 1968. 
 They were listed in the 1975 "Guinness Book of World Records" as "the globe's loudest band" for a 1972 concert at London's Rainbow Theatre, and have sold over 100million albums worldwide. 
