Marronnier (마로니에) is a South Korean pop/ballad project group mostly active in the 1990s. Their song "Cocktail Love" was sung by guest singers Shin Yoon-mi, Choi Sun-won and Kim Shin-woo of Marronnier's third album released in 1994. "Cocktail Love" got huge popularity right after its release. However, The improvised group performed lip syncing with songs by Shin Yoon-mi and Choi Sun-won. The group in the Cocktail Love music video didn't sing at all on Marronnier's third album. There was a legal dispute between the record label because they stole Shin Yoon-mi's voice and arrangement rights. Shin Yoon-mi sang "Cocktail Love" live in court to prove her rights. Shin Yoon-mi won a copyright lawsuit against record label and regained 'Moral Rights of singers' and 'copyright for chorus arrangement'.

Shin Yoon-mi and Kwon In-ha appeared on the 11th episode of "Two Yoo Project Sugar Man" in 2020.

"Cocktail Love" has been covered by Turtles, Seo Young-eun featuring Kim Youn-woo, and GFriend.