The 19-year-old striker has hit four goals in two games at the U-20 African Nations Cup, most recently netting in the 4-3 loss to Senegal in Ndola, Zambia last night.
Singh, the top scorer at the COSAFA Cup last year, recently joined Portuguese Primera Liga side Braga on a one-and-a-half-year deal following a stint with Swedish second-tier outfit GAIS.
"Good player, bright future ahead of him," Sono tells KickOff.com. "He should play for Bafana, he is miles ahead of other players in Bafana."
The Jomo Cosmos boss and South African footballing legend steered Bafana to the final of the 1998 AFCON, an event which launched the international career of Benni McCarthy.
While Sono is impressed with Singh he feels it is too early to draw comparisons with Bafana's record marksman and sole UEFA Champions League winner.
"Not yet, too early to judge. He is lucky his mentor is Farouk Khan."
Meanwhile, Sono backs Amajita to book their place in the U-20 AFCON semi-finals when they meet Sudan in their final Group B game on Sunday.
Should Thabo Senong's charges advance then they will also qualify for the FIFA U-20 World Cup in South Korea.
"They must win and the coach knows what to do. He has a plan already."