Hi Arnica, thankyou for the challenge, it is one i have given other people to do but not myself, although i have put a song to a photo a lot, i havent thought back from the music to a photo so i will give it a go,
for your challenge, how about using the night mode setting on your phone, you could include some candle light or streetlights or just low light inside your home if you cant go out... is that ok?