I like all the warp songs in OoT, but I love the Bolero of Fire the most. Its tune is faster paced than several of the others and reminds me of a marching army. I think it's extremely fitting for the Fire Temple. The Serenade of Water and the Prelude of Light are tied for second since I like their tunes quite a bit as well, they are peaceful. I also love the scenes associated with getting the Bolero of Fire, the Serenade of Water, and the Requiem of Sprit, so the Requiem of Spirit is my third favorite.