Here's how you play a G sharp on the bass guitar. G sharp is gonna be one half step higher than our open G string, the first string, which is the one furthest away from you when you're playing the instrument. So, this is the open G. The first fret will be G sharp. The other name for that same name is A flat, because it's one note below the note A on the 2nd fret. So, we can find it using that same formula all over the bass. On our D string, we skip a note to get to E, we don't skip a note between E and F. We skip a note to get to G, and then, by going up a half step, we find our G sharp. And then, we can check it, by knowing the next note is A, and it's still a half step lower than A, A flat, or a half-step higher than G, G sharp. On the E string, we can find the note G sharp by going up using our same formula. The open E will bring us to F, because we don't skip any notes to get from E to F. We'll skip a note to get to G, and then, the note that's just above G, on the 4th fret of the E string is gonna be our G-sharp and A-flat. Similarly, you can find it on the 11th fret of the A string, a half-step below A, and we can also find it at the 6th fret, on the D string. And that's how you play a G-sharp on the bass guitar.