Rodgers' yodeling refrains are integral to the blue yodel songs. Some yodels contained more of the Alpine type of yodel as well. A yodel by Gustafson was used to write the lullaby. Thomas said he learned to yodel from listening to African Pygmy singers. He admired Jimmie Rodgers as well, and learned to yodel by listening to his records. Dritten is a Yodel Volksmusik family group from the Bernese Oberland, Switzerland. Rodgers included his famous yodel throughout the song. Sometimes the singer exaggerates the break through repetition, as a yodel. Janet McBride grew up in Maine where she began to yodel while still a child. His reaction to hearing "Blue Yodel No. 7" inspired him to become a guitar player. One song incorporates a type of yodel into it. Drew Carey has referred to him as Hans, Yodel Man and most frequently, Yodely Guy. Transhumance contributes a great deal to traditional Alpine culture, such as Yodel, Alphorn or Schwingen. The song "Boys" incorporated a type of yodel into it. The company primarily competes with UK Mail, UPS, Parcelforce, DHL, Hermes, Royal Mail and Yodel.