Gülçin Ergül (born October 30, 1985) is a Turkish singer, songwriter, composer, dancer, choreographer, actress, and yin yoga teacher. In 2005, she established a girl-band named Hepsi where she was the lead vocalist. In 2015, she released her second solo EP album titled Bir Tanecik Aşkım. The music video for "Bir Tanecik Aşkım" garnered 47 million views on YouTube. She recorded an English version of the song called "My One and Only Love". Throughout her music career, she has worked with Turkish musicians such as Sezen Aksu, Yıldız Tilbe, Mete Özgencil, Harun Kolçak, Ozan Doğulu, Kenan Doğulu, İskender Paydaş, Bülent Aris, as well as RedOne, Marek Pompetzki, Toni Cottura, Michel Zitron.