“I was told that I would die. [My fingers] were turning green and black I guess," Jeff Diamond said. For 60 years, Jeff Diamond has been known for his extraordinary guitar-playing talents and signature soulful voice. He says countless audiences around the world call him “the human jukebox.” The Minnesota-native has performed all the hits from feel-good oldies to R&B, soul, country, and even hip-hop. While Diamond is skillful at most instruments, he especially has a love for the guitar. ... At just 70-years-young, Diamond said he still has unfinished business touring and performing at all sorts of venues, but...