"Aphasia" is an instrumental

Instrumental

An instrumental is a musical composition or recording without lyrics or singing, although it might include some non-articulate vocal input; the music is primarily or exclusively produced by musical instruments....

 by the Swedish heavy metal

Heavy metal music

Heavy metal is a genre of rock music that developed in the late 1960s and early 1970s, largely in the Midlands of the United Kingdom and the United States...

 band Europe

Europe (band)

Europe is a Swedish rock band formed in Upplands Väsby in 1979 under the name Force by vocalist Joey Tempest, guitarist John Norum and drummer Tony Reno. Although widely associated with glam metal, the band's sound incorporates heavy metal and hard rock elements...

. It is the fifth track on the band's second studio album, Wings of Tomorrow

Wings of Tomorrow

Wings of Tomorrow is the second studio album by the Swedish heavy metal band Europe. It was released on February 24, 1984, by Hot Records.The song "Scream of Anger" was originally titled "Black Journey Through My Soul"...

, and is the shortest track on the album, with a playing length of approximately 2 minutes and 32 seconds.

It is currently the only Europe song to be solely written by guitarist John Norum

John Norum

John Norum is a rock music guitarist and founder of the Swedish band Europe . Concurrent to his role with Europe, he also maintains a side solo project...

 to appear on a Europe studio album ("Boyazont" from the 1983 self-titled debut album

Europe (album)

Europe is the first studio album by the Swedish heavy metal band Europe. It was released on February 24, 1983, by Hot Records.-Track listing:All songs were written by Joey Tempest, except where noted.#"In the Future to Come" – 5:00#"Farewell" – 4:16...

 was co-written by Eddie Meduza

Eddie Meduza

Eddie Meduza was a Swedish composer and musician working mainly in the rockabilly genre. Many of his songs were about alcohol, women, and cars, quite often with obscene lyrics. Sometimes they were also politically oriented, many aimed against the Swedish Social Democrats...

). It is the second and currently final instrumental to appear on a Europe studio album.

The song is featured on the compilation album Rock the Night: The Very Best of Europe

Rock the Night: The Very Best of Europe

Rock the Night: The Very Best of Europe is a compilation album by Europe, which was released on March 3, 2004 by Sony Music.Unlike 1982–1992, which was put together by vocalist Joey Tempest on his own, the track listing for Rock the Night was decided by all the members of the band.-Disc one:#"Rock...

.
The song was covered by the Swedish power metal

Power metal

Power metal is a style of heavy metal combining characteristics of traditional metal with speed metal, often within symphonic context. The term refers to two different but related styles: the first pioneered and largely practiced in North America with a harder sound similar to speed metal, and a...

 band HammerFall

HammerFall

HammerFall is a power metal band from Gothenburg, Sweden. The band was formed in 1993 by ex-Ceremonial Oath guitarist Oscar Dronjak.- Early days :...