Free and public domain sources:

archive.org/details/SoundieK

www.pexels.com/photo/tulip-flowers-2058498/

archive.org/details/grimm_fairy_tales_1202_librivox/grimmsfairytales_01_grimm.mp3

archive.org/details/adventures_sherlockholmes_1007_librivox/adventuresherlockholmes_01_doyle.mp3

archive.org/details/snf091_2204_librivox/snf091_onnoise_schopenhauer_pt_128kb.mp3

archive.org/details/aporee_50800_57938

archive.org/details/Medicusc1939_16