My mum wants to include song lyrics into her songs. How can she do that?

does your mum talk think about including lyrics in her personally devised songs? Then she needs a lot of inspiration and a certain poetic talent.

If she wants to include lyrics in her mp3-collection then she needs a tool like mp3tag.
It may be helpful to read the program's help first.
If this leaves open further questions then she naturally may come back with more specific questions.
Greetings to your mum.