B Power Chord (5) (B5)
1+5
Notes in B Power Chord (5)
B (root)F#
Inversions
Same notes as B Power Chord (5), with a different chord tone as the lowest note. Useful for smoother movement between chords instead of jumping around the keyboard.
Root position
B in the bass
1st inversion
F# in the bass (B5/F#)
Press B and F# together on the keyboard and you're playing B Power Chord (5).
Just a root and a fifth, no third at all. That makes it neither major nor minor, which is why rock guitar and simple piano left-hand parts lean on it so much. It sounds strong and neutral, and it leaves room for a singer or another instrument to decide the mood.