Konvaljen has been in prison for more than 20 years, but in 1972, when he was released from Hall, he participated in the album Kåklåtar, on which a number of prisoners were given the opportunity to express themselves musically. In 1975 he released his only solo album, Konvaljen, which featured more famous and well known musicians.
After a escape from the prison he was given the nickname "Konvaljen". A newspaper had misunderstood the name Lennart "Connvaij" Johansson. "Connvaij" became "Konvaljen" in the newspaper heading. After that he was called "Konvaljen".
Two recordings, masses of radio and television appearances and all the attention in the press had made Konvaljen a well-known person who was linked to the progressive music movement.