Iranian groove/death metal band Integral Rigor released theit new single Fallen on April 3rd 2020. Telegram channel Heavy Metal Daily conducted interview with band's mainman, vocalist and guitarist Reza Rostamian. Hey there! Tell us about yourself and your band. Hi! I’m Reza Rostamian, founder of Integral Rigor from Iran. I’ve started playing electric guitar since 1995. Currently I’m doing vocals & guitars beside my band mates Masoud Moghaddari (Guitars) and Shahriar Rajabpour (Bass). What's the...