Madrid! Madrid! This is one of my favorite cities in Europe. I have been there twice but if I still have the chance to visit again in the future, I still would love to go back.
I am just letting you know that there are a lot of street performers in Madrid. If you are especially in Plaza Mayor or Puerta del Sol, you will see a lot there.
One of my favorite are the street musicians that performs in Puerta del Sol. They really play good music and I am guessing if they are using musicians friend ovation guitar. I saw them perform a lot of times in this area. Everytime they perform, a lot of people are really stopping to listen to their music. They look so professional that they are even wearing a nice costumes. Some are even dancing to the beat of their music.
I hope to see them again im´n my next visit. Here is an image I took during my second visit in Madrid last March 2012.