Short answers, pulled from the story.
Dr. Hepcat was the stage name of Albert Lavada Durst, an American blues pianist, singer, and baseball commentator who became the first black radio DJ in Texas. He was influential in the spread of rhythm and blues and rock and roll music.
Albert Lavada Durst, known as Dr. Hepcat, was born on the 12th of January 1913 in Austin, Texas. He died in Austin on the 31st of October 1995.
KVET manager John Connally, later the Governor of Texas, heard Durst announcing Negro league baseball games in Austin. With the backing of station owner Jake Pickle, Durst was hired in 1948 as the station's baseball commentator and first black disc jockey.
In 1953, Durst published The Jives of Dr. Hepcat, a dictionary of the jive talk he used on the radio.
Durst retired from KVET in the early 1960s and was ordained as a minister at Mount Olive Baptist Church in 1965. He returned to playing the blues at festivals and other venues starting in the mid-1970s.
In 1978, the magazine Wax credited Durst as one of the inventors of rock'n'roll radio. The Texas State Historical Association also credited him with introducing an entire generation of white Austin listeners to jazz, blues, and rhythm and blues.