Everyone has a soul. Some of us have rhythm, some don't (if you've ever seen me dance, you know I'm in the latter category). Describing it as the love child of a Manhattan and a Sazerac, Greg Best in Atlanta created the Rhythm and Soul approximately 10 years ago. My fellow cocktailian Michael Bounds, who created the Ides of March, introduced me to the Rhythm and Soul.
Coat the inside of a chilled glass with absinthe, combine the other ingredients in a mixing glass with ice, stir with soulful rhythm, and strain into the chilled glass. Lemon peel garnish optional.
Best uses bourbon as the base spirit, but Bounds and I agree that to have the true soul of a Sazerac, rye should be the base of a Rhythm and Soul. Use the whiskey you prefer. Best calls for Carpano Antica as the sweet vermouth, and I wholeheartedly agree. It is pricey, but it is worth every penny. Averna, the Sicilian amaro used in the A Thief In The Night, works really well here. If you even remotely like either the Manhattan or Sazerac, you'll definitely like the Rhythm and Soul.
Move to your own beat, and get yourself some more Rhythm and Soul.