If you've ever caught yourself quivering mid-listen into Little Mix songs like "Secret Love Song" or "No More Sad Love Songs," chances are you were experiencing the side effects of Jesy Nelson's bone-chilling tremolo.

One-fourth of the power ensemble, Nelson's well-tuned voice plays a big role in the group's vocal formation, delivering a flicker of soul to every performance. From her energetic flare on songs like "Power" and "Lightning" to her sweet and sassy touch on "Shout Out to My Ex," we're breaking down the singer's vocal highlights.

Check out our compilation of the Mixer's best vocal moments, above. Missed your fave? Let us know in the comments below.

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