The title of the opening story of The Silmarillion (S/15-22), clearly a compound of Ainu “Holy One” and lindalë “music”.
Conceptual Development: Although the story itself dates back to the earliest Lost Tales, this title only emerged in Silmarillion drafts from the 1930s version (LR/156).
Ainu noun "holy one, angelic spirit"; fem. Aini (AYAN, LT1:248); "one of the 'order' of the Valar and Maiar, made before Eä"; pl. Ainur is attested. Adopted and adapted from Valarin ayanūz(WJ:399). In the early "Qenya Lexicon", ainu was glossed "a pagan god", and aini was similarly "a pagan goddess", but as Christopher Tolkien notes, "Of course no one within the context of the mythology can call the Ainur 'pagan' " (LT1:248). Ainulindalë noun "Music of the Ainur" (SA:lin #2), the First History (WJ:406), the Song of Creation (AYAN)