Complex sentence: Singers like Tim Storms, J.D. Sumner, Mike Holcomb and various other gospel basses use this technique to create sub harmonics the current record at G-7, or 0.189 Hz is held by Tim Storms which he achieved by amplified vocal fry.
Split into simpler sentences: Singers like Tim Storms, J.D. Sumner, Mike Holcomb and various other gospel basses use this technique to sing very low tones. The current record at G-7, or 0.189 Hz is held by Tim Storms which he achieved by amplified vocal fry.