Hello evryone,I want to know how to download pdf sheets,when I press on pdf a new page is open and tell me that I must Subscriptions to 8notes.com,how to download it free?

PDFs are only available to subscribers. You can print the music from the standard 'gif' view - it's lower quality, but it's available to print free of charge.

What about scores, mp3s and midi files?

Gifs and midis are available free to download, although playback on the site of the mp3s is limited to 3 plays per day for non-subscribers.

Thx.

How do you favorite a piece of music sheet. I know I have already favorated one, but it just happened?

There's a link in the top right above the music, next to the 'report error' button