Once you’ve got something you like, try shifting it out of your normal speech pitch pattern by using steps (one note up or down), skips (a third up or down) or a leap (a fourth or more) between words. Eventually, the bass line drops down an octave and changes its stubborn pedaling to play chord tones along with the rest of the rhythm section. It starts with the same old D and A. Next, it moves to C♯ and A for the A chord. Then it moves to the B chord but still keeps the pressure on with that non-chord-tone A. Finally, it rounds off with a pleasant, resolute walk-up, bouncing back up between notes of the major scale and A, which is the root of the chord. Classic!