Can anybody point me to a site where I can safely, and legally, download the traditional "Happy Birthday To You" music, with or without singing. I have searched dozens of MP3 download sites & listened to hundreds of samples, but cannot find a suitable MP3. I believe this track is out of copyright so am reluctant to pay for it - on iTunes, Amazon MP3 downloads, etc - unless absolutely necessary.

Thanks in advance, from a 'newbie' on this Forum.