This is one of those amazing one-hit wonder singles with a name that seems designed to make associating it with the music nearly impossible. It appeared at the cusp of transition between classic psychedelic rock and the emerging sound of heavy metal, a cusp also defined by the first big Led Zeppelin hit of the same year, "Whole Lotta Love." This pressing is on the yellow Amazon label. (It also appeared on a multicolored label and on a white label. I'm not aware of a significant price difference among these variants.) Note: This beautiful 45 has Near Mint labels with a small drillhole (see scan). The vinyl looks Near Mint with a few light scuffs, and the audio sounds pristine Mint.