Willner was a musician, songwriter, visual artist and program director in the radio. This made him a well-known profile both inside and outside the Salvation Army. His profession was in the world of school, to educate young people as vocational teachers and teachers in social sciences.
The whole life since his teens, he was a soldier in the Salvation Army and appeared in Nässjökåren.

When "The Heaven Singers" were formed in Nässjö, Lars-Göran Willner was the leader.