Nursing Graduation Song that can be played on a guitar.

Hey guys,

I am a nursing student that will be graduating in May and our class is in the process of planning our pinning ceremony. I am a musician and a singer and play guitar. Another student in the class asked if I would be willing to play my guitar and sing a song with her at our pinning ceremony. I agreed on the condition that I could find a song that could be performed well with two voices and a guitar playing. I have looked at other topics here on the forum that mentioned graduation songs, but a lot of them seem to be too complex or too active to be done with just an acoustic guitar. So if anybody has any kind of ideas please let me know. We are a small nursing class of 23 that has been through a lot together. We began with 60 members and have ended up with less than half of our starting members. I really hope that you guys' input will help me choose a song. To give you an idea of the stuff that I sing and play, you can check out my reverbnation page. www.reverbnation.com/krisclegg. Thank you so much