At the 1994 and 1995 National Quartet Conventions, the Horizon Records family gathered for joint choir performances, conducted by Mike Speck.

The choir for the 1994 event was: The Barkleys, Believer's Heart, Greg Bentley, The Brewers, Canaanland, Carpenter's Tools, Johnny Clontz, Chris Collins, Jeff Collins, The Crusaders Quartet, Different Way Quartet, The Dunsmores, Mark & Jerri Ferguson, Linda Fish, Gloryland Singers, Connie Goon, Gospel Express, Gospel Proclaimers, The Hall Family, Mike Harlson, Harmony Creek, Linda Harvey, Heaven's Echoes, Higher Destination, Sonya Isaacs, The Journeymen, Jubilation, Kingdom Keys Quartet, Lighthouse, Manships, The McKameys, The Melodyaires, The Michaels, The Mike Speck Trio, Mission, Robbie Mullinax, New Dawn, The Proclaimers Quartet, Carol Rollyson, The Samaritans, The Sammons Family, The Singing Eternals, Tim Surrett, Eddie Swann, The Ted Mullins Family, Terry Unthank, Kevin Ward, and The Wray Brothers.

The choir for the 1995 event was: The Barkleys, Greg Bentley, Derick Boyd, The Brewers, The Browns, Carpenter's Tools, Jeff Collins, Different Way Quartet, The Dunsmores, Mark & Jerri Ferguson, First Corinthians, Linda Fish, Harmony Creek, The Hall Family, Singing Hayes Family, Haynes Family, Steve Hinze, Hometown, The Jeffreys, Parker Jonathan, Jubilation, Lighthouse, Manships, The Martin Family, The Melodyaires, The Michaels, The Mighty Gospel Enforcers, Mission, Robbie Mullinax, Rick Parkey and Redeemed, Redemption, The Regents Quartet, David Ring, The Sharps, Solid Rock III, The Mike Speck Trio, Temple, The Victors, The Wray Brothers, and The Youngs.