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The song has been in the upper ranks of the charts since it was released, and it finally ranked 8th on Melon's real-time chart.
The song quickly climbed real-time charts and placed number one on South Korea's Gaon Single Chart.
Their second studio album, Mystic Ballad, was released hours later and quickly topped South Korea's digital real-time charts.
Soon after the release of the album, the single ranked high on real-time charts.
It launched on Sunday 14 June 2009 and is the first ever real-time chart to be broadcast in the United Kingdom.
"Going Crazy" topped the Gaon Chart and also dominated major real-time charts in Korea such as Melon, Bugs!
Following the release of "I Got a Boy", the song received an 'all-kill' on all real-time charts in South Korea within two hours of its release.
JeA also pre-released the track "Let's Hug" on December 28 from her upcoming solo album reaching the no.1 spot on real-time charts.
In November 2011 an interactive network map was introduced making it possible for IT administrators to have an real-time chart of the network at a very granular level.
The Big Top 40 Show is the first real-time chart show ever to be broadcast in the United Kingdom, consisting of downloads and airplay.