Rosa was born in Bad Godesberg, Germany and spent her childhood in Mexico and Europe. She began playing drums at age 16 and has studied at The Music Conservatory Of the University of Veracruz, and The School of Superior Studies of Mexico City. She was later granted a scholarship from the Mexican Endowment of the Arts for completion of her training at Musicians Institute in Los Angeles, California where she studied with such notables as Casey Scheuerell, Ralph Humphrey, Joe Porcaro and Taka Numazawa. Upon graduation in 1991, Rosa was presented with the award of Outstanding Student of the Year and also received the Human Relations Award.
She has also performed with artists such as Ann-Margret, Pat Boone, Glen Campbell, Debby Boone, Shari Lewis, Elkie Brooks, and the Broadway show "Five Guys Named Moe". In 1992, she began her association with Andy Williams; with whom she performed over 300 shows a year. She played with Andy until 2008. She currently resides in New York City.