How do you apply a singer in Disney channel?

There is no such application that allows applicants to apply to be a singer specifically on the Disney Channel. However, there are several casting calls and auditions held by the Disney Channel from time to time for specific roles and projects, including for singers.

To be considered for these casting calls, you can keep an eye on the Disney Channel website, as well as follow their social media accounts, for announcements regarding auditions or casting opportunities. You can also submit a general talent audition tape to the Disney Channel, highlighting your singing talents, along with any other relevant skills and experience you have.

It's important to note that the Disney Channel has specific requirements and criteria that need to be met for their casting calls, and competition is usually very high. Therefore, it's essential to prepare and present yourself in the best way possible if you want to increase your chances of getting noticed.