Friday will mark one year since rock-funk superstar Prince suddenly died, shocking the music world. George Case, leader of Mahoning Valley funk band Geo C and the Storm, has long listed the Purple One among his biggest musical influences. To pay tribute to him, Case has written and recorded a song fittingly titled “April 21st” — the date of Prince's death. It’s an 8-minute elegy reminiscent of Prince’s “Purple Reign.” The song will appear on the forthcoming Geo C and the Storm album, “Youngstown Funk.” But it is available now exclusively on vindy.com as a free download. "April 21st" was composed, arranged, performed and produced by Case, who also sings and plays all instruments except guitar, which was handled by his bandmate Tyrone Williams.