So, the intro of this song might sound kinda confusing in chord-speak, but it’s really pretty simple. It’s basically an F# to a B, with just a slight finger variation giving it a little magic. Technically speaking, you’re going from an F# to an F#maj7 (back and forth) and then a B to a B-5 (back and forth in the same fashion). Please note that that’s a B-5 (minus 5) and not just a regular old B5. The difference is the 5th note is flatted.

Basically, form an F# chord. We are only going to focus on the first three notes (that’s all you really need to play anyway). Your first finger should be on the 2nd fret of the low E (6th) string, your 3rd finger on the 4th fret of the A (5th) string, and your pinky on the 4th fret of the D (4th) string. To turn that into an F#maj7, simply place your middle finger on the 3rd fret of the D (4th) string and lift up your pinky. Your F# is now transformed into an F#maj7. Listen to the song and the way Billie plays back and forth between the two to hear how to play it properly.

For the B chord, you really only need to playing a B5, which is your first finger on the 2nd fret of the A (5th) string, and then either your 3rd or 4th (pinky) finger, depending on how you comfortably play it, on the 4th fret of the D (4th) string. The motion to turn it into a B-5 is essentially the same as what you did with the F# chord. Use your middle or 3rd finger to instead play the 3rd fret of the D (4th) string. Switch back and forth between the two just as you did with the previous chord.

That sounds absurdly more complicated than it really is. Once you put it into practice you will see how simple it is. Hopefully we’ve explained it thoroughly.

If you listen to the song, you’ll hear that he is playing it this way also during the verses (except for the parts that go back and forth from C# to B). For the sake of the chord chart not looking ridiculous, we just used the basic chords above the lyrics.

Without further adieu:

Green Day - Uptight, chords and lyrics