Boston [US], August 3 (ANI): Iconic rock band Aerosmith has announced they are officially retiring from touring. The five-member American band, which has till date sold an estimated 150 million records worldwide, in a statement on Friday that they are cancelling their world tour as their 76-year-old lead singer Steven Tyler is suffering from a vocal injury that he sustained last year. “We’ve always wanted to blow your mind when performing. As you know, Steven’s voice is an instrument like no other. He has spent months tirelessly working on getting his voice to where it was before his injury. W…