ðɪ ˈælbəmz tˈaɪɾəl ɹᵻfˈɜːz tə ðə tɹˈɪbjuːtˌɛɹi sˈɔŋ "hˈæts ˈɔf tʊ ɹˈɔɪ hˈɑːɹpɚ" baɪ lˈɛd zˈɛpɪlˌɪn fɹʌm ðɛɹ θˈɜːd ˈælbəm, lˈɛd zˈɛpɪlˌɪn ɹˌoʊmən θɹˈiː.
The album's title refers to the tributary song "Hats Off to (Roy) Harper" by Led Zeppelin from their third album, Led Zeppelin III.