Complex sentence: Jesse J performed the song by herself on "The Ellen Degeneres Show" on October 17,2014, on The X Factor UK on 19 October, and at The Concert for Valor in Washington, D.C. on November 11,2014.
Split into simpler sentences: Jesse J performed the song on The X Factor UK on 19 October. Jessie J performed the song by herself at The Concert for Valor in Washington, D.C. on November 11,2014.