Pavarotti- Tosti's "Ideale" (live)

If anyone has any specific information on this performance I would appreciate it. I believe this performance is from 1973. Lyrics: (Italian) Io ti seguii come iride di pace Lungo le vie del cielo: Io ti seguii come un'amica face De la notte nel velo. E ti sentii ne la luce, ne l'aria, Nel profumo dei fiori; E fu piena la stanza solitaria Di te, dei tuoi splendori. In te rapito, al suon de la tua voce, Lungamente sognai; E de la terra ogni affanno, ogni croce, In quel sogno i scordai. Torna, caro ideal, torna un istante A sorridermi ancora, E a me risplenderà, nel tuo sembiante, Una novella aurora. Torna....torna...... English translation: I followed you like a rainbow of peace A long way across the sky; I followed you like a friendly face of the night under a veil. And you feel it in the light, in the air, In the scent of the flowers; And the solitary room was full of you, of your splendors. Captivated by you, by the sound of your voice A long time I dreamed, and all the worry of the earth, every cross In that day is forgotten. Return, beloved ideal, Return for an instant. Give me a smile again, and to me the sparkle of your countenance will be a new dawn. ... a new dawn. Return, beloved ideal, return, return! Please comment! I also highly recommend Tosti's "Non t'amo piu," "Addio," "Marechiare," "L'ultima Canzone," "A vuchella," and "Serenata." (in that order! :P)