The two music legends exchanged a series of tweets:

https://twitter.com/#!/CharlieDaniels/status/186268680605270017

https://twitter.com/#!/NancySinatra/status/186270279557840896

https://twitter.com/#!/CharlieDaniels/status/186280982779936768

https://twitter.com/#!/NancySinatra/status/186294029116379137

https://twitter.com/#!/CharlieDaniels/status/186299042387599360

https://twitter.com/#!/NancySinatra/status/186302749326053376