Heart  is an American rock band that first found success in Canada and later in the United States and worldwide.  The constant center of the group since 1974 is sisters Ann Wilson (lead singer) and Nancy Wilson (guitarist).  Heart rose to fame in the mid-1970s with music influenced by hard rock and heavy metal as well as folk music.  To date, Heart has sold over 35 million records worldwide, including over 22.5 million in album sales in the U.S.  With Top 10 albums on the Billboard Album Chart in the 1970’s, 1980’s, 1990’s, and 2010’s, Heart is among the most commercially enduring hard rock bands in history.  They were inducted into the Rock and Roll Hall of Fame in 2013.  (More from Wikipedia)