[[Berkas:GD&TOP performance at Big Bang's Big Show, 2011.jpg|jmpl|G-Dragon tampil bersama T.O.P. pada tahun 2011]]
Pada November 2010, YG Entertainment mengumumkan akan merilis [[GD & TOP|album kolaborasi]] dari G-Dragon dan [[T.O.P]].<ref name="English KBS">{{cite web| title = G-Dragon and Top to Release Duet Album in December| author = | publisher = KBS World| date = 30 November 2010| url = http://english.kbs.co.kr/Entertain/EntertainmentNews/view.html?No=7597| accessdate = 20 Januari 2011| archive-date = 2012-09-01| archive-url = https://www.webcitation.org/6AM06UKeD?url=http://english.kbs.co.kr/Entertain/EntertainmentNews/view.html?No=7597| dead-url = yes}}</ref> Sebelum album dirilis, duo ini menggelar sebuah ''showcase'' perdana untuk album mereka di Times Square di Yeongdeungpo, Seoul,<ref name="Showcase1">{{cite web| title = Big Bang T.O.P, G-Dragon pose at album showcase| author = Kim, Jessica| publisher = 10Asiae| date = 15 Desember 2010| url = http://10.asiae.co.kr/Articles/new_view.htm?sec=ent0&a_id=2010121517465032528| accessdate = 20 Januari 2011| archive-date = 2012-09-11| archive-url = https://www.webcitation.org/6AashXMU8?url=http://10.asiae.co.kr/Articles/new_view.htm?sec=ent0| dead-url = yes}}</ref> dan disiarkan langsung di [[Youtube]].<ref name="Showcase2">{{cite web| title = G-Dragon and T.O.P hold world premiere showcase for duo unit| author = Yoon, Hee-Seong| publisher = 10Asiae| date = 15 Desember 2010| url = http://10.asiae.co.kr/Articles/new_view.htm?sec=ent0&a_id=2010121515073341432| accessdate = 20 Januari 2011| archive-date = 2012-09-11| archive-url = https://www.webcitation.org/6AasmaK8f?url=http://10.asiae.co.kr/Articles/new_view.htm?sec=ent0| dead-url = yes}}</ref> Untuk mempromosikan album tersebut, duo ini merilis tiga singel: "High High," "Oh Yeah", dan "Knock Out."<ref name="singles">{{cite web| title = Big Bang unit G-Dragon and T.O.P release third title track| author = Hong, Lucia| publisher = 10Asiae| date = 24 Januari 2010| url = http://10.asiae.co.kr/Articles/new_view.htm?sec=ent0&a_id=2010122416330144889| accessdate = 20 Januari 2011| archive-date = 2012-09-11| archive-url = https://www.webcitation.org/6AassAuN3?url=http://10.asiae.co.kr/Articles/new_view.htm?sec=ent0| dead-url = yes}}</ref> "High High" memuncaki berbagai tangga lagu<ref name="JoongAng">{{cite web| title =Big Bang duo on TV today| author = | publisher = The Korea JoongAng Daily| date =13 Januari 2011 |url =http://joongangdaily.joins.com/article/view.asp?aid=2930881 | accessdate = 20 Januari 2011}}</ref> sementara "Oh Yeah" dan "Knock Out" masing-masing menduduki posisi nomor 2 dan 3.<ref name="10asia">{{cite web| title = IU "Good Day" stays atop Gaon chart for 4th week| author = Kim, Heidi| publisher = 10Asiae| date = 6 Januari2011| url = http://10.asiae.co.kr/Articles/new_view.htm?sec=ent0&a_id=2011010614550467107| accessdate = 20 Januari 2011| archive-date = 2012-09-11| archive-url = https://www.webcitation.org/6AaswquJy?url=http://10.asiae.co.kr/Articles/new_view.htm?sec=ent0| dead-url = yes}}</ref><ref name="10asia2">{{cite web| title =IU's "Good Day" takes charge of Mnet chart for 4th week| author =Kim, Heidi| publisher =10Asiae| date =4 Januari 2011| url =http://10.asiae.co.kr/Articles/new_view.htm?sec=ent0&a_id=2011010410363241185| accessdate =20 Januari 2011| archive-date =2012-09-11| archive-url =https://www.webcitation.org/6Aat1DQ7f?url=http://10.asiae.co.kr/Articles/new_view.htm?sec=ent0| dead-url =yes}}</ref> Album dirilis pada [[Malam Natal]] dan debut pada posisi nomor 1 di Gaon Chart<ref name="Gaon">{{cite web| title =Gaon Chart Search: GD & TOP | author = | publisher = Korea Music Content Industry Association| date = |url =http://gaonchart.co.kr/main/section/search/list.gaon?Search_str=GD+%26+TOP | accessdate = 31 Oktober 2010|language=bahasa Korea}}</ref> dengan penjualan sebanyak 130.000 kopi setelah dirilis.
G-Dragon berkolaborasi dengan [[Park Myeong-su]] dan membentuk duo bernama GG untuk [[Infinite Challenge]] Seohae Ahn Highway Song Festival 2011. Mereka merilis lagu "Fired Up (바람났어)" yang dinyanyikan bersama [[Park Bom]] dari 2NE1 pada 2 Juni 2011 dan meraih status ''All Kill'' di beberapa tangga lagu Korea.
