Is Robert Plant slowly warming to the notion of another Led Zeppelin reunion? By the looks of his Sensational Space Shifters opening night setlist for his tour Down Under -- it certainly looks like it. Noise 11 reported that on March 23rd, nine of the 14 songs in Plant's show were Zeppelin classics, with Plant tackling "Heartbreaker," "Friends," "Black Dog," "Going To California," "Four Sticks," "Ramble On," "Bron Y Aur Stomp," "Whole Lotta Love," and "Rock And Roll."