Music Licensing Inc (SONG)

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Isn't Legato is a style of music not an artist? Could this be different versions of same song? I could be wrong-probably am.
Legato is Italian for “tied together” and it is also referred to as a slur.
This notation indicates that the musical notes are played or sung smoothly and are connected to each subsequent note without a gap or pause.
It’s like writing words in cursive vs each letter on its own.
This produces fluid, flowing phrases that have no silence between each note.
Legato is thus the opposite of staccato, where the notes are short and distinct from one another.
How to Notate Legato
So how do you know when the composer wants you to produce the flowing, connected phrasing associated with legato?
The use of a curved line, starting on the first note and ending on the last note of the connected phrase, indicates a slur or legato.
For example, in the image below, the lines above the notes are telling us to play from the second note D to the Bb at the beginning of the 2nd bar legato and then the Eb to the A in the second bar legato too.