The opening theme of the game was based on these most popular games were produced by TreeCardGames, when the program will clicking on the Help > About menu, while the game do have a level is complete, is also different to the sound of a game.
The question is asking about the sounds in the program "Bonnie's Bookstore" for Windows. The user is inquiring about which sounds in the game sound similar to the opening theme, which is based on popular games produced by TreeCardGames. The question also mentions that the sound when clicking on the Help > About menu is different from when a level is completed.