Parthenon Huxley — a.k.a. P. Hux — has been bending pop’s rules for decades, whether fronting ELO Part II/The Orchestra or turning out critically adored solo records. His knack for guitar-driven hooks and bittersweet turns of phrase makes him a cult favorite among power-pop aficionados. On Play On: A Raspberries Tribute, he revs up Dave Smalley’s “Hard to Get Over a Heartbreak” with a perfect mix of muscle and melody.