Los Angeles-based emcee ECHO recently dropped the visual to his track DIOTIMA, taken off his latest album RAP PHILOSOPHIÆ: BOOK I ‘Diotima’ produced by San Diego-based TENJ, is the third track/visual to be taken off LA-based Dominican emcee ECHO’s recent album ‘Rap Philosophiæ: Book I‘. Each track title on the album is a philosopher’s name…