Bob Dylan's lyrics are one of a kind. To me his songs are categorized as a different genre of music.
For example, his song 'Tambourine Man': He sings the song like prose with a tune, harmonica, and guitar.
Hey! Mr. Tambourine man, play a song for me
I'm not sleepy and there is no place I'm going to
Hey! Mr. Tambourine man, play a song for me
In the jingle jangle morning I'll come following you
Though I know that evening's empire has returned into sand
Vanished from my hand
Left me blindly here to stand but still not sleeping
My weariness amazes me, I'm branded on my feet
I have no one to meet
And the ancient empty street's too dead for dreaming.
And then he uses figures of speech, figurative poems, allegorical meanings, euphemisms, and other literary devices extensively.
His songs 'Hard, Hard Rain's gonna fall', 'Love minus zero/Without limit', 'Desolation Row', 'Blowing in the Wind,' 'The times they are a-changing', etc., are similarly innovative.
Is Dylan's mixture as a poet, singer, and lyricist considered by writers, reviewers, or scholars to have created a new genre?