A 5th chord
A5 chord for piano with keyboard diagram.
Explanation: The A fifth is a two-note chord (since no third is included, it is neither a major nor minor chord). The chord is abbreviated A5.
Theory: The A5 chord is constructed with a root and a fifth. It is common to also include the first note again one octave up.
Notes: A - E
Left hand: 5-1
Right hand: 1-5