Toccata is the second track from Emerson, Lake & Palmer

Emerson, Lake & Palmer

Emerson, Lake & Palmer, also known as ELP, are an English progressive rock supergroup. They found success in the 1970s and sold over forty million albums and headlined large stadium concerts. The band consists of Keith Emerson , Greg Lake and Carl Palmer...

's 1973 album Brain Salad Surgery

Brain Salad Surgery

Brain Salad Surgery is the fourth studio album by progressive rock band Emerson, Lake & Palmer, released in 1973 and the first under their Manticore Records imprint. It fuses rock and classical themes. Lyrics were co-written by Greg Lake with fellow ex-King Crimson member Peter Sinfield. Cover...

. It is an arrangement of the 4th Movement of Alberto Ginastera

Alberto Ginastera

Alberto Evaristo Ginastera was an Argentine composer of classical music. He is considered one of the most important Latin American classical composers.- Biography :...

's Piano Concerto No. 1, Op. 28 (1961).

The song features heavy use of synthesizer

Synthesizer

A synthesizer is an electronic instrument capable of producing sounds by generating electrical signals of different frequencies. These electrical signals are played through a loudspeaker or set of headphones...

s. Both Keith Emerson

Keith Emerson

Keith Noel Emerson is an English keyboard player and composer. Formerly a member of the Keith Emerson Trio, John Brown's Bodies, The T-Bones, V.I.P.s, P.P. Arnold's backing band, and The Nice , he was a founder of Emerson, Lake & Palmer , one of the early supergroups, in 1970...

's keyboard synthesizers and Carl Palmer

Carl Palmer

Carl Frederick Kendall Palmer is an English drummer and percussionist. He is credited as one of the most respected rock drummers to emerge from the 1960s...

's newly developed drum synthesizers were used prominently.

Alberto Ginastera himself liked the band's rendition very much. A quote from him appears in the liner notes of Brain Salad Surgery saying "Keith Emerson has beautifully caught the mood of my piece".