"Eruption" is an instrumental by Van Halen from their first album, Van Halen. Written and performed by Eddie Van Halen, this electric guitar solo is considered one of the most influential rock instrumentals of all time, appearing on many 'greatest guitar solos' lists, including a recent Guitar World poll.
Eruption starts with a short accompanied introduction with brother Alex Van Halen on drums and Michael Anthony on bass. The highlight of the solo is the use of fretboard tapping. Eruption was played on the Frankenstrat and a phaser. A 1960s Marshall tube amp, an Echoplex, a Univox echo box, and studio plate reverb helped define the distinctive tone of the track. The Frankenstrat was tuned a 1/2-step down from regular guitar tuning. Eruption begins in the key of A flat and ends on a E flat note that is a twelfth fret, 6th string harmonic processed through a Univox echo box effect and lowered an octave by an Echoplex.