There are plenty bands with this name
(1.) Howl is a sludge metal band from Providence, RI (http://www.myspace.com/howlheavymetal
(2.) Howl is a Norwegian alternative rock band from Oslo (http://www.myspace.com/howl1)
(3.) Howl was the name of the Ballarat band that are now known as Hunting Grounds
(4.) HowL is a korean pop singer
(5.) Howl is a punk-prog band from Los Angeles, CA. (http://www.myspace.com/thebandhowl). Are now known as "CYO Stars"