A topic channel is where your art tracks are housed on YouTube. Typically, they are titled ‘Artist Name – Topic’, where ‘Artist Name’ is your artist name. For example razz mattreezy – Topic.
A topic channel is automatically generated by YouTube, and can’t be customised, nor does it have a log-in function to it.
If you would like to merge your topic channel with your artist channel (the channel you log into on YouTube to upload your music videos, etc), you can do so by applying for an Official Artist Channel, provided you meet certain criteria.
To learn more about Official Artist Channels, read this guide: What is an Official Artist Channel, and how do I get one?