It appears in various verses, such as those by Tatyana Shilova and Yu.I. Ivanov, often symbolizing vulnerability or the act of opening one's soul to another.
The line "I gave the keys from my heart" is used in popular web literature, such as on Ficbook , usually within romantic or dramatic storylines. Песня Она Мне Кинула Ключи - TikTok
It is widely used in social media edits (like CapCut) to convey sincere emotions, with fans noting its "music from the heart" quality.