What Is This Song (Do-Ti-So-La)

What is this song? I have to know I heard it once so long ago I was so young. Now though I've grown I still remember how it goes Do-ti-so-la, do-ti-so-mi Do-re-mi-fa, mi-re-do-ti What used to be a melody Is nothing but a memory So if you'd care to ask around Please try to find my special sound Do-ti-so-la, do-ti-so-mi Do-re-mi-fa, mi-re-do-ti La-ti-la-ti-do-do La-ti-la-ti-do-do La-ti-do-re-mi-mi-re-do-ti-la La-ti-la-ti-do-do La-ti-la-ti-do-do Ti-do-re-mi-fa-re-do-do