As we near the end of the school year, I like to teach a round by ear to the second-year students. Then in our final full orchestra rehearsals of the year, after the spring concert is over, we can play a two- or three-part round without the use of sheet music. The orchestra has been invited to play at the end-of-the-year assembly in recent years, and everyone lined up in the front of the gym and performed one of these rounds first in unison and then in parts. It was easy setup because I only needed chairs for the cellists--no stands required :)
Each of these are in the key of C Major, as that is the key we're focusing on during this time of the year, but the rounds could easily be transposed to the key of your choice. Students do get the sheet music eventually, but ideally they don't need it by then; it's just for reference. The sheet music documents include Alpha note versions at the end.
Music Alone Shall Live
Oh, How Lovely Is the Evening
Lachen
Enjoy!
