No, a label bio is not required to successfully present your music on the platforms. However, a good label bio gives readers and listeners an insight into the history and musical style of your label.

Here is an example of a current label bio:

Sunrise Records
Sunrise Records is an independent label for electronic music. Founded in 2012 by a team of musiclovers, the label aims to promote innovative and melodic sounds in the electronic music scene. With a diverse catalogue ranging from deep house to techno to ambient, Sunrise Records has made a name for itself worldwide. The focus is on high quality music that transports the listener into a unique soundscape.