No doubt you're humming Daydream Believer or Last Train to Clarksville as you read this.

The lead singer of The Monkees, Davy Jones, has died.

His rep tells TMZ that he died after suffering a heart attack this morning in Florida. Jones was 66.

AP reports that Jones' publicist, Helen Kensick, confirmed that he died in Indiantown, where he lived.

Jones joined The Monkees in 1965, with Dolenz, Michael Nesmith and Peter Tork.

Dolenz updated his Facebook status with:

"Can't believe it...Still in shock...had bad dreams all night long. My love and prayers go out to Davy's girls and family right now."

And Tork updated his with: "It is with great sadness that I reflect on the sudden passing of my long-time friend and fellow-adventurer, David Jones. His talent will be much missed; his gifts will be with us always. My deepest sympathy to Jessica and the rest of his family. Adios, to the Manchester Cowboy. Peace and love, Peter T."

Jones is survived by his wife, Jessica, and four daughters from previous marriages.