Simplify the following text for a Grade 7 native English-speaking person.
Original: The lyrics of the Himno Nacional Argentino ( the national anthem of Argentina ) were written by Vicente LÃ pez y Planes , and the music was composed by Blas Parera .
Simplified: A copy published in 1847 called it `` Himno Nacional Argentino '' , a name that has remained until today . Its lyrics were written by Vicente LÃ pez y Planes , and the music was composed by Blas Parera .