Asus2 chord
A suspended second
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The Asus2 chord has the intervals I, II, V with notes A, B, E
Matching Scales: A Major A Minor A Major Pentatonic B Minor B Blues B Minor Pentatonic E Major E Minor E Blues
Commonly used in pop, rock, and jazz, the suspended second chord usually has no third and therefore sounds open since it lacks a minor or major tonality. It can function as a preparatory chord before a resolution at the third.