The Smokeshow Mouth Call 3-Pack gives you three options that allow you to produce all the true-to-life sounds you need to call in a wary tom.

Batwing: Produces deep, clear tones that allow you to make every sound a hen does
Barber’s Cut: Offers crisp, clear yelps on the front end with a touch of rasp on the back end – designed by Harold Knight
Ghost Cut: High-pitched call with a touch of rasp, perfect for kee-kee runs

Technique:
Place the call in the roof of your mouth with the printed K&H logo on top and the reeds facing out. 
Place your tongue against the reeds, then apply pressure. 
Push air from your throat to produce notes. 
Yelp: With pressure applied to reed, say the words "chick" or "chuck" with even rhythm. 
Cluck: With pressure applied to reed, say the word "puck" with even rhythm. 

If the call feels too large for your mouth, trim tape up to 1/16".