In Infinite's own words, it was their distinctly Korean flavour that nailed it for them.
Last December, the K-pop septet's hit, The Chaser, topped a list of 20 Best K-pop Songs of 2012 drawn up by US music authority Billboard.
The addictive electropop track featured a punchy hook, catchy chorus and a seamless blend of rap and melodies, but it was still a feat for the rising boy band, to beat the likes of established stars Psy, 2NE1 and Big Bang.
In an e-mail interview with LOUD ahead of their concert here on Oct 5, 24-year-old leader Sungkyu was humble about the group's chart achievements Stateside.
"Wow, it's already been a year. Many talented artists were nominated and we appreciate that we were ranked No. 1 on (the) Billboard K-pop (list)," he said.
"We don't think it was because we were better than the other artists, but to encourage us to do even better.
"And that was exactly what we did - we tried to do our best for our new album."
Their latest EP, New Challenge, was released in March to massive success in South Korea, sweeping the top spot on all the mainstream music charts like Mnet, Daum, Melon and Gaon.
Sungkyu added that the "special" part about The Chaser is that "unlike other K-pop tunes, people can feel something Korean throughout our whole song".
"That said, although the melody and lyrics are 'Korean', it sounds really neat with powerful vocals and charismatic dance choreography."
Infinite - also comprising Dongwoo, Woohyun, Hoya, all 22, Sungyeol and L, both 21, and Sungjong, 19 - are on their first world tour, which will take them to the US, South America and Europe at the end of the year.
Next month, at the Singapore leg of their tour, local fans can expect surprises from the boys, who have refused to be pigeonholed. "When it comes to music, we keep trying new things," said Dongwoo.