"Who Can It Be Now?" is a song by the Australian band Men at Work, written by lead vocalist Colin Hay. It was released in Australia in 1981 as a single before being included on their debut album Business as Usual. The song became a major hit, reaching No. 1 on the US charts in October 1982 and earning gold certification in Australia and Canada
. The song's lyrics were inspired by Colin Hay's personal experience living in an apartment complex where he was frequently disturbed by people knocking on his door, often confused with drug dealers living nearby. This situation made him anxious and wary of opening the door, which is reflected in the song's theme of paranoia and wanting to avoid unwanted visitors
. Musically, the track features a distinctive saxophone hook played by Greg Ham, which was originally placed later in the song but moved to the introduction on producer Peter McIan's suggestion. The song is considered a classic of the new wave genre and remains one of Men at Work's most recognizable hits
. In summary, "Who Can It Be Now?" is a new wave pop-rock song by Men at Work, written by Colin Hay based on his real-life experience of feeling anxious about unexpected visitors knocking on his door
