Answer: If you were talking about the guitar: The E minor arpeggio uses 3 notes from the E minor scale. The first note E, the flat third note G, and the fifth note B. These same 3 notes create the E minor chord or triad when played in unison. The red dots of the diagram represent the root notes.
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PLUS: Several other expert guides covering essential topics... While music written in major keys sounds bright and cheery, minor keys ... Can you grab an instrument and work out exactly which chord it is? ... In the first audio sample, the progression includes the minor 5 chords, or an E minor chord (v).
