F# Add11 (F#add11)
Also written as Gb Add11 (Gb and F# are the same key).
Notes in F# Add11
Inversions
Same notes as F# Add11, with a different chord tone as the lowest note. Useful for smoother movement between chords instead of jumping around the keyboard.
Root position
F# in the bass
1st inversion
A# in the bass (F#add11/A#)
2nd inversion
C# in the bass (F#add11/C#)
3rd inversion
B in the bass (F#add11/B)
Open voicings
A close-position chord like F# Add11 can sound cluttered in the middle of the keyboard. Jazz players open it up by dropping one note down an octave, spreading the same notes wider without changing the chord.
Drop 2
C# on the bottom
Drop 3
A# on the bottom
Play F#, A#, C# and B together and you get F# Add11.
A major triad with an eleventh added and no seventh underneath. The eleventh is the same note as the fourth an octave up, so it adds a gentle rub without the stronger pull of a sus4. Worship piano and modern pop use it as a slightly richer way to play a plain major chord.