I am looking for audio and/or video resources in Spanish (as spoken in Spain, not Latin America) to practise shadowing. Shadowing is a technique that involves listening to audio and simultaneously speaking out loud the words you hear. The goal of the technique is to improve pronunciation.
Since I am currently at level A2, I am looking for audio that is a bit slower than the normal Spanish speech rate, but not content for children. The difficulty of the content is otherwise not relevant (i.e. content at level C2 is also fine), as long as the speech is a bit slower than normal but otherwise quite natural. The content should also be entirely in Spanish and, of course, spoken by a native speaker of the language.
Additional clarification: I am not looking for a language course but (preferably) online content to complement the course materials that I have already. Podcasts may be fine, provided that they are not longer than 10 minutes (and audio intros and outtros are just a distraction).