Watch the I’m a Person online guitar lesson by Annie Raines from Blues Harmonica Blueprint
I’M A PERSON: This is based on the classic riff we know as "Mannish Boy," but it has also been recorded as "I’m a Woman" as well as a number of other "declarative" songs. The beauty of a minimalist figure like this is that the range of possible note combinations is limitless.
This riff can be the basis for tons of improvisation exercises: play the riff and count the 2 beats in between repetitions, then start experimenting with notes over those 2 beats. All you have to do is keep good rhythm, leave plenty of space and ba-DAA-da-dum! you’re a composer.