Martin was accompanied by a string section and guitarist Grace Bowers during the reflective performance
Payne was a judge on the show, which was in production at the time of his passing
Payne died last October after falling from a third-floor balcony at the CasaSur Palermo Hotel
The film-maker passed away on January 15, aged 78
Nores is one of five people who have been charged in Argentina over the death of Payne
The man allegedly broke a restraining order and attempted to visit the singer's house
Five people have been charged by Argentine authorities over the One Direction star's death
The singer also admitted to feeling "conflicted" about criticising the series: "I needed a show like that to give me a chance"
Braian Paiz, a restaurant waiter, is one of five people charged in Payne's death
"The proper thing to do was to leave him in a safe place, and with company, until a doctor arrived"