Happy birthday to you. This is a beautiful, popular and enduring birthday blessing song song. This is a 3/4 tune with three paragraphs. The rhythm is a waltz, and the timbre: 1 can be used as a string. At the end of a pause (that is, during the empty beat), the tone of the violin changes and two paragraphs are played. Similarly, if the second paragraph is empty, change the string back (or play the third paragraph with other timbre you like), and finally add an ending to the last few beats to make it better.