The Wiggles have written new music each year since their inception; they sequestered themselves for a month each summer and wrote three albums' worth of original children's music based on simple concepts familiar to young children, and using several genres of music and types of instruments. Most of their songs were short and started with the chorus because they felt that young children needed to be presented with a song's topic in their first few lines. They wrote songs individually at first, but eventually wrote as a group, often with John Field, trumpet player Dominic Lindsay, and Paddick. Fatt, the only member of the original group without a degree in early childhood education, tended to focus on composing music. Fatt told reporter Brian McElhiney, who called the group's songwriting process "a collaborate affair", that they wrote repetitive pop songs or jingles, which were appealing to children. Watkins reported that she was invited to write songs for their albums, even though she was primarily a dancer. John Fogerty of Creedence Clearwater Revival, who appeared in a Wiggles video in 2002, told "The New York Times" that he was "very impressed" with the group's songwriting, especially with their drum sound.