For Trudy, the Band Day competition is nothing new.
"I've been to Band Days forever," Kattner said. "There are photos of my dad sitting on the cardboard stage at O. B. Laing Middle School, with his saxophone. I've grown up with Band Day."
Thomas, a 32 year resident of Algona, has enjoyed Band Days of the past, too.
While in high school he played the clarinet, his real talent has come from his vocal ability.
"My musical instrument really has been my voice," Thomas said.
Thomas said he has been a "less than faithful" member of the Cornbelt Barbershop Chorus for the past 30 years.
Thomas has also helped out with the Sullivan Building Foundation Committee.
Trudy, however, has marched the Band Day routes in the past.
"Most of the time in my life, I've been in the parade," Trudy said. "Be it marching for high school band, Girl Scouts or American Association of University Women, I've marched numerous times in the parade route."
Trudy's first instrument she played was her grandfather's saxophone, which he had during World War I.
Trudy said as they've grown older, they have had a chance to sit back and watch their own kids march in he Band Day parade, and if their grandkids were in the area, they probably would watch them as well.
"Band Day is really a great family day," Trudy said. "I can't count the number of times we've been helping at the Rotary donut mobile, and seen chairs already set out on the curb to mark people's spaces for the parade in the early morning hours. People in Algona are so respectful, not taking anyone's space they've reserved for the parades."
The Kattner's are also members at First United Methodist Church in Algona.
Trudy is the supervisor for the Algona campus of Iowa Lakes Community College. Thomas is the manager of Miller Lumber Yard in Algona.

