I love Asia so I have to love its music
I'm interested in Asian cultures and especially languages so listening to music is my way of getting to know them better. Plus, I've found that singing along to let's say, ayu helps me with my accent. Although the accents aren't usually that vivid while singing, I consider to be a great way of learning
So it's this plus what AyuIsTheBest and Crrystal Ageha said
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just singing along to songs I don't know 
Je ne veux pas travailler, je ne veux pas déjeuner, je veux seulement oublier, et puis je fume.