You can see a transcript of this audio here: https://www.davies-business-english.com/de/rss/359-how-long-does-it-take-to-learn-english.html

Music: Happiness - www.bensound.com

You can find descriptions of the levels for self assessment purposes, in various languages, here: https://www.coe.int/en/web/common-european-framework-reference-languages/table-2-cefr-3.3-common-reference-levels-self-assessment-grid