In general, a radio-ready song is one that is three minutes, give or take 30 seconds. It doesn't have a long intro, and it should get to the main hook within the first 30 seconds. Typically, even if it has an instrumental break, it's a shorter one, because three and a half minutes doesn't offer a lot of breathing room.
It is a short song composed by lenon - McCartney in the beetles early years when they were known as quarrymen. It was the earliest song attributed to their songwriting partnership.
