The current Philadelphia musical renaissance is spearheaded by the recording studios and rock clubs in town. Foremost among these venues is MilkBoy, run by producer/engineer Tommy Joyner, who also produces music at the Philadelphia recording studio of the same name. Hosting and recording sessions for artists like Lana Del Ray, Silk Sonic, Miley Cyrus, and James Taylor, Joyner is a songwriter himself, and, surrounded by so much creativity and growth, it was inevitable that he’d eventually get around to recording his own music. To nobody’s surprise, the music being created by Joyner is polished, tuneful, sharply composed, and wholly irresistible. His band PEP RALLY makes grown-up pop-rock of the best…