In late spring 1936, Parker played at a jam session at the Reno Club in Kansas City. His attempt to improvise failed when he lost track of the chord changes. This prompted Jo Jones, the drummer for Count Basie's Orchestra, to contemptuously take a cymbal off of his drum set and throw it at his feet as a signal to leave the stage. However, rather than discouraging Parker, the incident caused him to vow to practice harder, and turned out to be a seminal moment in the young musician's career when he returned as a new man a year later. Parker proposed to his wife, Rebecca Ruffin, the same year and the two were married on July 25, 1936. In the fall of 1936, Parker traveled with a band from Kansas City to the Ozarks for the opening of Clarence Musser's Tavern south of Eldon, Missouri. Along the way, the caravan of musicians had a car accident and Parker broke three ribs and fractured his spine. The accident led to Parker's ultimate troubles with pain killers and opioids, especially heroin. Parker struggled with drug use for the rest of his life.
Despite his near death experience on the way to the Ozarks in 1936, Parker returned to the area in 1937 where he spent some serious time woodshedding and developing his sound. In 1938 Parker joined pianist Jay McShann's territory band. The band toured nightclubs and other venues of the southwest, as well as Chicago and New York City. Parker made his professional recording debut with McShann's band.