It's a monster lesson to us all but remember that Coltrane himself practised this piece for a whole year until he recorded it.I once spent a few week's on the dot's for it and if you blink your dead.The line's flow amazing,I want to visit the Church of Saint John Coltrane in Philli,in the USA,the reverent there play's tenor to his flock,it look's and sound's mad but what a buzz it would be.I will go before i die,i must.