REQUESTED. Female Singers Singing Long Notes Longest Notes Female Singers Demi Lovato Longest Note Perrie Edwards Best Vocals Beyonce Longest Note Mariah Carey Long Notes Whitney Houston Longest Note Best Vocals Leona Lewis Best Vocals Leona Long Note Patti Labelle Long Notes Best Florence Welch Long Notes Christina Aguilera Best Vocals Female Singers High Notes Lana Del Rey Long Notes Pink Over The Rainbow Oscars Jessie J Longest Note