Los Alfonso is a Paraguayan musical group formed in 1987. The group is composed of brothers Oscar, Emilio, and Juan Alfonso, and their cousin, César González. Los Alfonso are known for their unique blend of traditional Paraguayan music with modern pop and rock influences. They have released over 20 albums and have toured extensively throughout South America and Europe. Their music has been praised for its catchy melodies, heartfelt lyrics, and energetic live performances.