Spanish Music

As we prepare for our trip to Bolivia, Donovan and Wayne have been discussing music, and how we might be able to enhance some of our experiences through sharing the gift of music.  With Donovan/Henry playing guitar, we plan to learn some common hymns and modern worship songs in Spanish, and be able to sing both the Spanish and English versions in various appropriate settings.  We are already learning songs such as "Come, Now is the Time to Worship" and "What a Friend We Have in Jesus."  What are some other common songs that you, as our reader and support, would love for us to be able to share with our Bolivian brothers and sisters?  Please post a comment below with your suggestions.  Gracias!