Deletion of Portuguese Rhapsody

Comment: No valid deletion rationale has been presented. Having one source does not equal delete. Could the nom explain why they think that source isn't reliable? And per , I found these sources within 10 seconds: http://www.cinept.ubi.pt/pt/filme/383/Raps%C3%B3dia+Portuguesa one, https://books.google.co.uk/books?id=ay5rIWCXlLsC&pg=PA735&dq=%22Raps%C3%B3dia+Portuguesa%22+%22Jo%C3%A3o+Mendes%22&hl=en&sa=X&ved=0ahUKEwimy_zdprTlAhXPbsAKHbqzBv8Q6AEIKDAA#v=onepage&q=%22Raps%C3%B3dia%20Portuguesa%22%20%22Jo%C3%A3o%20Mendes%22&f=false two, https://books.google.co.uk/books?id=mqsagnIDJ8sC&pg=PT331&dq=%22Raps%C3%B3dia+Portuguesa%22+%22Jo%C3%A3o+Mendes%22&hl=en&sa=X&ved=0ahUKEwimy_zdprTlAhXPbsAKHbqzBv8Q6AEILzAB#v=onepage&q=%22Raps%C3%B3dia%20Portuguesa%22%20%22Jo%C3%A3o%20Mendes%22&f=false three, https://books.google.co.uk/books?id=Gi25CwAAQBAJ&pg=PT191&dq=%22Raps%C3%B3dia+Portuguesa%22+%22Jo%C3%A3o+Mendes%22&hl=en&sa=X&ved=0ahUKEwimy_zdprTlAhXPbsAKHbqzBv8Q6AEIOTAC#v=onepage&q=%22Raps%C3%B3dia%20Portuguesa%22%20%22Jo%C3%A3o%20Mendes%22&f=false four. I suspect there's lots more in Portuguese, but alas, I don't speak Portuguese
Stance: keep
Cited policy: Wikipedia:Articles for deletion (WP:BEFORE)

Comment: as it has reliable book sources as found by Lugnuts above,so passes , imv
Stance: keep
Cited policy: Wikipedia:Notability (WP:GNG)

Comment: WP:SKCRIT One source is claimed by the nominator however . Subject is notable
Stance: keep
Cited policy: Wikipedia:Notability (WP:NEXIST)