SPPBSQSUS International Quartet Champions
| Year | Quartet | Tenor, Lead, Bari, Bass |
|---|---|---|
| 2026 | Continuum | Byron Poore, Dave Melonson, Matt Clancy, Dan Walz |
| 2025 | Riptide | Rick Taylor, Tim Reynolds, Richard Lewellen, Jeff Selano |
| 2024 | Wheelhouse | Brandon Brooks, Rich Gray, Jeff Gray, Dan Van Wetering |
| 2023 | Brouhaha | Tim Reynolds, David Calland, Clay Hine, Kirk Young |