The call elk bulls love to hear! This elk game call produces all cow/calf mews and nasally sweet estrus sounds. Can produce and imitate the estrus scream.The Trophy Wife will produce all cow/calf mews and nasally sweet estrus sounds. It can also produce and imitate the estrus scream. The plastic barrel produces a different sound than it&&';;s counter partner - M4 Matriarch. Easy to blow and sensitive. Simply use your top lip on the reed and blow air across the reed. Firmer lip pressure creates higher pitches, while less lip pressure results in deeper pitches. Cow mews start with a high pitch and taper smoothly to a lower pitch. Mews should be about 1 second in length. Chirps are shorter and higher pitched, lasting less than a second. Estrus mews are pleading and drawn out 1A 1/2 seconds or longer. Practice on the call and listen to real elk on CDs and DVDs since they are the best teachers of all!