In 1977, he amazingly survived a massive explosion in a lumber mill which left him in the hospital for six months recovering from burns to over 50% of his body. Sherman really earned the name "Tank" after this fight for life. Now more determined than ever, he embraced his true calling and began focusing all of his time and energy on his music.
Three years later, Tank formed his own blues band, "Incognito". The band was at the forefront of the Vancouver music scene. They released three independent CD recordings toured extensively across Canada. Sherman also began making guest appearances with other groups, composing and recording jingles in the recording studio, and collecting harmonicas.