Matt Heafy - Reacting To The 'In Waves Making Of Documentary'
37:16
Trivium's MATT HEAFY On Songwriting - "It Can't Just Be Riffs"
58:33
GLHF with Matt Heafy #4 | Corey Beaulieu
1:15:41
Mastodon - The Making of Emperor of Sand [Full Documentary]
22:00
Trivium's Earliest Recordings | Matthew K Heafy | Trivium Origin Stories
44:05
Everything Is Fine: The Making Of Periphery V: Djent Is Not A Genre
1:01:38
Nik Nocturnal Podcast with Matt Heafy of Trivium & Ibaraki #2
1:02:29
Matt Heafy (Trivium) Talks With Tim Henson (Polyphia) | Origin Story
1:21:46