Katie Melua is a popular singer from Georgia. She had her first big hit with Nine Million Bicycles.
This song is a new song that is relaxing and romantic. The English grammar that it uses is the 2nd Conditional. The title of the song is a conditional sentence.
If You were a sailboat, I would......
The idea of the song shows how the 2nd conditional is about unreal situations. Obviously the man she sings about is not a sailboat.
One interesting grammar point is the way the lyrics use If you were but also If I was. If I was is grammatically incorrect. With the 2nd Conditional, all subjects take the verb were. This means:
If I were, If you were, If she were, etc.
However, it is common in spoken English to make this grammar mistake. A good song that shows the correct use of the grammar is Beyonce's If I Were a Boy.
Listen to the video for If You Were a Sailboat and try the listening exercise. Remember that verbs that follow modals are always base verbs.