She'd uploaded a photo of Taeyeon's "Secret" - problem was, she'd been streaming an illegally uploaded version on Soundcloud. Fans noticed immediately and the post was taken down, and she apologized quickly, saying, "Hello, it's Nayeon. First of all, I want to apologize for my Instagram post. As a singer, I always have to be careful on music and all of the ways to express it, but I was so rude. I'm sorry that I troubled so many people. I'll only use the official music streamers that I originally used so something like this never happens again. And I will be careful on everything. Thank you."

SEE ALSO: 'Gee' becomes Girls' Generation's first track to surpass 100 million Spotify streams

While many people do illegally download music, many were baffled that Nayeon - who probably suffers from illegal downloading - would use the service herself. 

What do you think of the situation?