E/G♯ Piano Chord
E/G♯ is a E Major chord played over a G♯ bass note. Because G♯ is the 3rd of E Major, E/G♯ is simply E Major in 1st inversion — the same notes, with the 3rd moved to the bottom.
The dark key is the bass note (G♯); the coloured keys are the E Major chord tones.
Notes in E/G♯
Low to high: G♯ (bass) , then E – G♯ – B.
How to play E/G♯
Play the bass note G♯ low in your left hand, and the E Major chord (E – G♯ – B) in your right. Because it's an inversion, the bass is already one of the chord tones — you're just voicing E Major with its 3rd on the bottom.