MKTO is an American musical duo, consisting of Malcolm Kelley and Tony Oller. Their debut single, 'Thank You', was released in January 2013. The follow up single, "Classic", was released in June 2013. MKTO's self-titled debut album was released on January 30, 2014. On June 2, 2015, MKTO released a new single named "Bad Girls", which is from their EP Bad Girls, which was released on July 24 of that same year.