Rolling in the deep

The song "Rolling in the Deep" by Adele is performed in the original key of C# minor. It was released in 2010 as the lead single from her second studio album, "21". Adele co-wrote the song with Paul Epworth, who also produced it. The lyrics of the song are about a vengeful ex-lover, and Adele's powerful and emotional interpretation adds depth to the song. Interestingly, "Rolling in the Deep" showcases a mix of soul, blues, and pop elements, creating a captivating melody supported by a catchy chorus and impactful instrumentation.