WTHB

WTHB is the NBC affiliate that serves the Thumb area of east Michigan, licensed to Sandusky. It broadcasts on channel 23. ==News Themes==
 * Number Thirteen (1977-1983)
 * WTHR 1983 News Theme (1983-1984)
 * NewScore - VTS Productions (1984-1989)
 * NBC: The Place To Be (1989-1994)
 * Eyewitness News - Gari Media Group (1994-August 9, 1997)
 * WGN News Theme (V.1) - Non Stop Music (August 10, 1997-September 1, 2003)
 * WGN News Theme (V.2) - Non Stop Music (September 2, 2003 - October 5, 2008 *Chicago's Very Own (V.1) - 615 Music (October 4, 2008-October 31, 2014)
 * Chicago's Very Own (V.2) - 615 Music (November 1, 2014-Present)