Mack Magaha (1929 to 2003). The dancing fiddler for Reno and Smiley and Porter Wagoner.
Why this player is listed
Mack Magaha appears in the Play Bluegrass guide to notable fiddle players, which collects contest champions, bluegrass fiddlers, Canadian fiddlers, judges, and departed legends tied to the tradition.
More fiddle context
For the larger list, start with the big list of fiddle players. For the style itself, read the guide to bluegrass fiddle.