resigned from the group, with Brian Eichenberger, a 19-year-old guitarist and bassist who was studying jazz arranging and performance under Phil Mattson at the Southwestern Community College's School for Music Vocations in Creston, Iowa, recruited to fill his position. Stegeman continued to sing the high part until well after Eichenberger joined, but when it was discovered that the latter possessed a true tenor voice, they ended up swapping parts. In 1998, the Four Freshmen were featured in a CBS special titled "The Four Freshmen: 50 Years Fresh!", hosted by Maureen McGovern to commemorate the 50th anniversary since their founding. This special features performances from not only then-current members Greg Stegeman, Kevin Stout, Bob Ferreira and Brian Eichenberger, but also former members Ross Barbour, Bob Flanigan, Bill Comstock and Mike Beisner. Towards the end, both groups came together to perform a reprise of "It's A Blue World", as well as "Fools Rush In", "Candy" and "Poinciana", which were not featured in the original broadcast. Kevin Stout left the group in December 1999 after a seven-year stint, following which he would collaborate regularly with high school friend and saxophonist Brian Booth. In his place was Vince Johnson, who had previously worked as an accompanist, educator and performer, and had performed throughout the world while with Princess Cruises. 2000s, 2010s and 2020s Greg Stegeman retired from the group in 2001, but continued to serve as an advisor to the Four Freshmen Music Foundation. While searching for a replacement, Brian Eichenberger encountered Curtis Calderon performing at The Landing jazz club in San Antonio. Calderon, who had toured with Russ Morgan's big band, was tapped to sing the second part and play trumpet and flugelhorn. Ken Albers died on April 19, 2007, at the age of 82. Former member Mike Beisner died of natural causes on July 6, 2008, at the age of 53. Bob Flanigan died on May 15, 2011, at the age of 84 from congestive heart failure. Last original member Ross Barbour died on August 20, 2011, at the age of 82 from cancer. Dennis Grillo died on October 31, 2011, at the age of 81. Vince Johnson, who had spent 13 years with the Four Freshmen, decided to leave the group in fall 2013 to explore more opportunities in the field of music. Replacing him was Stein Malvey, who had previously collaborated with Brian Eichenberger on his 2009 solo album one