Songs of the spring sounds great..

It's been my experience that general titles like this work best for song circles, etc. (travelling/transportation, Drive the cold winter away, songs of goodbye and hello...)

If you get too specific, or unusual in the topic, it sometimes makes it difficult for people to jump in with more than one song.

On the other hand, we can just say that once you've sung a song on the topic of the night you can then sing anything that you want.

JAB.