There are many people named Colleen, and knowing which one you're talking about will help me identify their musical inspiration. For example:
* Colleen Ballinger (Miranda Sings): Is she the Colleen you are referring to? If so, her musical influences are likely pop music and Broadway.
* Colleen Hoover: Is she the Colleen you are referring to? If so, she's a novelist, and while she may have musical preferences, her work is not musical.
Once you provide more information, I can help you understand the musical influences of the Colleen you're interested in.