Rockabilly was popular during the 1950's lost popularity in late 60's became popular again in the 70's and lost popularity once again in the 80's.
It is still listened to today, just not as popular as it used to be.
Some of the popular artists during the time were Elvis, Art Adams, Buddy Knox, Little Richard, and Jerry Lewis.
The genre progressed and developed through time by some artists moving more toward rock.
Some commonly heard instruments in the music were electric guitar, drums, piano, vocals, and double bass.
It was more male dominated genre.