"Heaven" is the debut single by South Korean singer Ailee for her extended play Invitation (2012).

Recorded in two languages (Korean and Japanese), the Korean version premiered as the lead single from the EP through YMC Entertainment on February 9, 2012, while the Japanese standalone CD single was released on November 6, 2013, via Warner Music Japan.

An R&B, soul and dance number, the track was written and produced by Wheesung with additional songwriting contributions from Iggy and Seo Yong-bae.

Writing for music webzine IZM, Shin Hyun-tae praised Ailee's vocal abilities in the track and complimented her technique and charisma.

"[2] The publication included "Heaven" on their list of the best singles released during the year in South Korea; critic Eunji Yoon believed that the success of the song was purely the result of her strong vocal talent and skills, rather than relying on visual decorations that overwhelm the auditory sense or hailing from a major agency in the industry.