Here is the scene where Hobo John first encounters Jacob onstage at a Juke Joint:
“I looked over at Travellin’ Man, his eyes closed and his feet stamping as he nodded his head to the beat. Next to him, Jacob stared at me, pulled a harmonica from his bandolier and raised his eyebrow. I nodded imperceptibly as I did my best to honour the song by one of the finest slide players ever recorded. “Nobody’s fault but mine”
Read this article to find out about Chicago Blues harmonica playing techniques and Harmonica Effects Pedals.