The Kiss (also known as Annie's Theme) is an original song composed by Edmund Butt for the British series of Life on Mars and later Ashes to Ashes. It is generally considered the leitmotif of Annie Cartwright as it is a recurring instrumental song between her and Sam Tyler.
At the end of the final episodes of Series 2, the song plays during intimite scenes between Sam and Annie.
The song is titled "The Kiss" because it was used during the final scene of the concluding episode when Sam and Annie kiss and the final episode of Ashes to Ashes in the penultimate scene with the kiss between Alex Drake and DCI Gene Hunt. The song is featured in the Ashes to Ashes Series 3 OST.