Hi all. Lately Ive been working on learning a lot of old blues songs and Im getting really hung up on being able to pick the alternating bass notes and the melody of the song with my other fingers. For example Im working on Stagolee by Mississippi John Hurt. I can play the melody fine and I can play the alternating bass notes fine, but I cant put them together.

Does anyone have any tips on how to overcome this roadblock? It just seems as soon as I start to pick the melody I stop playing the bass notes and vice versa. Any help is appreciated!