In the 1970 season, Hammarby are newcomers to the men's Allsvenskan.
It goes very badly at first.
When half of the series is played, the team is last in the series.
The audience figures are weak at home at Söderstadion.
- It was deplorable.
We were tired of the team going yo-yo up and down between the series, remembers the supporter Stefan Löwstett, who was then 20 years old.
Inspired by Tipsextra
During the summer, the World Cup is played in Mexico and the Allsvenskan takes a summer break.
Stefan and his friends are thinking about what could lift their Hammarby.
In the new TV show Tipsextra, they had been charmed by the English grandstand culture.
It was loud and festive and the supporters sang to cheer on their teams.
This was something other than the tired Swedish cheers.
- They sang fantastically well, they were just amazed, says Stefan Löwstett.
The group of friends decides to copy the concept.
They sit down at the restaurant Kvarnen on Södermalm in Stockholm and write their own lyrics to famous songs.
- It would be simple texts to support the team.
Everyone could sing along.
Javascript is disabled
Javascript must be turned on to play video
Read more about browser support
The browser is not supported
SVT does not support playback in your browser.
We therefore recommend that you switch to another browser.
Read more about browser support
See the full report here.
Photo: SVT
Recharges with medium beer
At the first match of the autumn, no one really dares to take the tone.
A few weeks later, you top up with a medium beer - and when Hammarby makes 1-0 in the first half against Åtvidaberg on August 27, it's time.
- Tompa Eken (known as the founder of the music scene Kafe 44 in Stockholm) sued.
And so we started singing "Na-na-na-na Hammarby".
People around began to clap so slowly, some agreed, says Stefan Löwstett.
"Young people who took it in stride"
The song spreads, more and more for each match.
Finally, large sections of the audience sing the new songs.
With the choir in the stands, Hammarby does not lose a single match during the autumn of 1970. Newspapers and television do reports and the supporters become national celebrities.
- This is a starting shot at when the football audience went from being a spectator to becoming players themselves.
This was in time: the late 60's with all the youth revolts.
Many young people wanted to think more of life, says Magnus Hagström, who wrote "Autumn 70" together with Jonas Cederquist.
The song has gained a foothold throughout Sweden
The new and a bit messy atmosphere is not liked by everyone, but the song is gaining ground and is found today in almost all major football arenas in Sweden.
Then there are many supporters of other teams who think that Hammarby has taken a little too much credit for the new grandstand culture.
- But even in the other camps, there are people my age who can attest to: this is how it actually went.
That's true, laughs Stefan Löwstett.