During a serenade, one can pretty much sing any love song he likes, even English ones, and still get away calling it a harana. But if you are going for a truly authentic harana experience like they did in old Philippines, you have to use a particluar set of songs specifically written for the endeavor. These songs were written by some of the better-known composers in the last 75 years such as Santiago Suarez, Constancio de Guzman and Antonio Molina, to name a few.