The title also tells us that the author views this song to be the best and most excellent of all songs. It is the Song of Songs. It is much like when Jesus is referred to as the King of Kings, which means that he is the greatest of all kings, and when the sanctuary in the Jewish temple is described as the Holy of Holies, which means it is the Most Holy Place. This is the Song of Songs because of the message of its words.
1 The Song of Songs, which is Solomon’s.