Watch the C7 #9 Chord Inversions online guitar lesson by Frank Vignola from Inversion Excursion

The Jimi Hendrix chord. You gotta love it! We explore much more than the one sharp 9 chord that most guitarists know thanks to the great Jimi Hendrix.
The spelling of the C7(#9) chord is: C-E-G-Bb-Eb. The Eb really should be called D# as this is the true #9 but for some odd reason theorist have decided it is best to call this #9 an Eb instead of D#. Perhaps it is the connection with the minor 3rd or the blues note that is so familiar in the pentatonic. When soloing the pentatonic works great with dominant sharp 9 chords.
In this segment, I go through a bunch of C dominant sharp 9 chords and inversions and how I look at these very cool sounding chord types. Again, since this is a 5 note chord (C triad with 2 extensions) the options are huge. For each inversion, look at the chord and pick out each of the chord tones naming the notes.