"Sounds of Then (This is Australia)" is a 1985 song by Australian band Gang Gajang from their self-titled debut album, Gang Gajang. "Sounds of Then" was written by frontman Mark "Cal" Callaghan.Whilst the 1985 release of "Sounds of Then" was not an initial commercial success, it has become the band's most popular and recognisable song and reached its peak when it was used as Nine Network's station ID promotion in 1996.