First Signal (Harry Hess) - "Never Gonna Let You Go" - Official Music Video
First Signal (Harry Hess) - "Shoot The Bullet" - Official Music Video
Seafloor Spreading
First Signal (Harry Hess) - "This City" (Official video)
Harry Hess - Irresistible
Sea Floor Spreading | 100 Greatest Discoveries
First Signal (Harry Hess) - "Don't Let It End" - Official Music Video
First Signal (Harry Hess) - "Unbreakable" - Official Lyric Video
Look Right Through Me
First Signal (Feat. Harry Hess) - "Love Gets Through" (Official Lyric Video)
First Signal (Harry Hess) - "Show Me The Way" - Official Lyric Video
Harry Hess - Reach For You
First Signal feat. Harry Hess - "Last Of My Broken Hearts" (Official Audio)
First Signal - "Tonight We Are The Only" Feat. Harry Hess (Official Lyric Video)
Harry Hess - It's Over
Harry Hess Remembers His Iconic Ballad “Honestly”
Seafloor Spreading - Professor Harry Hess
Just Another Day
Seafloor Spreading - Earth Science for Kids!