The 7-1-5 "Voicing" is not a voicing at all, but refers to playing the 7th, 1st and 5th degrees of a scale, which - when played together or arpeggiated - go well with many chords constructed on the same scale. For example, just playing a 7-1-5 with different bass notes will yield completely different voicings for known chords. In this video I'll outline the idea and show you how it works in context by playing some harmonic progressions for you to actually hear what it sounds like. More About Chord Voicings from Wikipedia: "In music composition and arranging, a voicing is the instrumentation and vertical spacing and ordering of the pitches in a chord (which notes are on the top or in the middle, which ones are doubled, which octave each is in, and which instruments or voices perform each). Which note is on the bottom determines the inversion. Voicing is 'the manner in which one distributes, or spaces, notes and chords among the various instruments" and spacing or "simultaneous vertical placement of notes in relation to each other.'" For more, visit: en.wikipedia.org/wiki/Voicing_%28music%29 Related Videos/Playlists: My channel has many additional piano tutorial videos which I welcome you to check out. The main channel page is: www.youtube.com/user/MangoldProject?feature=watch Here's an interesting video about voicing the 2-5-1 progression: www.youtube.com/watch?v=8zWoOLQgOks How to modulate between keys using the 2-5-1 progression: www.youtube.com/watch?v=WS3BUH_XA3Q Learn to play Bach's Prelude in C major: www.youtube.com/watch?v=awfXBECOlTg My playlist of inspiring piano harmony, chord and voicing tips and tricks: www.youtube.com/playlist?list=PLP9cbwDiLzdIohD9iHFXzZIjfgoe0ETzm (Inside you will find additional major chord voicing ideas for piano!)