Before YouTube was around rap fans got their fill via radio, listening to their favorite rapper stake his claim on the airwaves while inspiring a new generation of rappers on the other side of the speaker. Since the early 80's when the phenomenon was still growing, many radio stations have built a strong reputation for featuring the best rappers and their killer freestyles.

From head-spinning off the dome lines to well prepared performances, we've scoured the archives to bring you the top 50 on-air freestyles to date. Hit the above slide to check it out: