Shovel Knight: Treasure Trove

In the Village, there is a Bard. He is the one you give the song scrolls to (However, the game actually calls them Music Sheets). They look like a sheet of paper with a musical note on them. Music Sheets can be found in various places, such as behind breakable walls, inside chests, "fished" out of pits with the Fishing Rod Relic, or even in just plain sight. Certain NPCs may give you a Music Sheet as well, upon meeting certain conditions. When you return a Sheet(s) to the Bard, he will pay you 500 Gold for each one you give him. In order to check which Music Sheets you might be missing, all you need to do is talk to the Bard. When he gives you the option "Play Me A Song", select it, and he will pull up a numbered list of all the Music Sheets in the game. The grayed out ones are the ones you have yet to return to him. This is an easy way to find out exactly which ones you are missing when cross-referencing with a guide.

Only Available On A "Clear!" File: Also, while on the world map, if you hover over a stage without selecting it for approximately 3 seconds, a prompt will show up in the bottom-right corner of the screen. Pressing the corresponding button it displays (for me it was the "Touch Pad" as I was playing on the PS4) will show you how many Music Sheets are available in that stage. If the image is filled in, that means you have it. If it is not filled in, then you don't. If you don't want to use a guide, then this feature will at least narrow down what level(s) you need to search for remaining Music Sheets on.

I have included a video guide of all the Music Sheet locations, based on the order that they appear in the list that displays when you speak to the Bard.