As if to thank অনুরাগী for her win at the '2014 MAMA', ইউ পোষ্ট হয়েছে on her Twitter, "I'm happy. It's all thanks to you. This is a present." She then provided the link to the audio heard above, which avid অনুরাগী of the singer may recognize it to be the full version of the পূর্ববর্তি snippet she let অনুরাগী hear on a অনুরাগী community page.
IU, of course, wrote and composed the song herself, so make sure to give it a listen above!
(link)