 Complete the following phrase:  Gärdestad was a songwriter who co-wrote lyrics for many of his younger brother Ted Gärdestads 19561997 songs. This included his Melodifestivalen song entries Oh, vilken härlig dag in 1973 and Rockin n Reelin in 1975. As such, Gärdestad also won Melodifestivalen 1979 with Teds song Satellit. The song went on to represent Sweden in 