Answer by taking a quote from the following article:

Ronald Shannon Jackson (January 12, 1940 - October 19, 2013) was an American jazz drummer and composer from Fort Worth, Texas. A pioneer of avant-garde jazz, free funk, and jazz fusion, he appeared on over 50 albums as a bandleader, sideman, arranger, and producer. Jackson and bassist Sirone are the only musicians to have performed and recorded with the three prime shapers of free jazz: pianist Cecil Taylor, and saxophonists Ornette Coleman and Albert Ayler.

Once in New York, Jackson performed with many jazz musicians, including Charles Mingus, Betty Carter, Jackie McLean, Joe Henderson, Kenny Dorham, McCoy Tyner, Stanley Turrentine, and others. Whenever he would ask Charles Mingus to consider him for his group, Mingus used to push him "rudely out of his way". After Jackson sat in with pianist Toshiko Akiyoshi, he heard loud clapping behind him. It was Mingus, who asked him to play with his band. In 1966 Jackson recorded drums for saxophonist Charles Tyler's release, Charles Tyler Ensemble. Between 1966 and 1967, he played with saxophonist Albert Ayler and is featured on At Slug's Saloon, Vol. 1 & 2. He is also on disks 3 and 4 of Ayler's Holy Ghost: Rare & Unissued Records (1962-70). Jackson said Ayler was "the first (leader) that really opened me up. He let me play the drums the way I did in Fort Worth when I wasn't playing for other people." John Coltrane's death in July 1967 devastated Jackson. He spent the next few years addicted to heroin. He said, "I couldn't play drums then, spiritually.... I just didn't feel right." From 1970-74, he did not perform, but continued to practice. In 1974, pianist Onaje Allan Gumbs introduced Jackson to Nichiren Buddhism and chanting. Although initially reluctant, Jackson decided to try it for three weeks. "Then three months had passed. It pulled me together and pulled me out and I was able to focus. I was a Buddhist and a vegetarian for 17 years." By 1975 he joined saxophonist Ornette Coleman's electric free funk band, Prime Time. During his stint in Prime Time, Coleman taught Jackson composition and harmolodics. Jackson says that Coleman told him he was hearing music "in that piccolo range," and encouraged him to compose on the flute. Jackson went to Paris with Prime Time in 1976 to perform concerts and record Dancing in Your Head and Body Meta. In 1978, Jackson played on four albums with pianist Cecil Taylor: Cecil Taylor Unit, 3 Phasis, Live in the Black Forest, and One Too Many Salty Swift and Not Goodbye.

What was his career?
Jackson performed with many jazz musicians,