Torgny Söderberg was one of Sweden's foremost songwriters and was behind 13 entries in Melodifestivalen, including "Diggi-loo diggi-ley" performed by the Herrey brothers and which won the Eurovision Song Contest in 1984.
The music producer and lyricist also wrote "Kärleken är evig" with Lena Philipsson, who came second in Melodifestivalen in 1986, writes Aftonbladet.
Several artists pay tribute and remember the songwriter in social media.
“Our beloved creator.
Father and mentor to Diggiloo and beloved colleague.
You helped start it all.
You are Diggiloo.
"writes the production company Krall Entertainment in an Instagram post.