Photos: Grammy nominations 2015: Show highlights

Maroon 5 band singer Adam Levine gets into the groove.   (Robyn Beck / AFPGetty Images)

Mary J. Blige is the center of attention amid a wave of fog.   (Paul A. Hebert / Invision / AP)

Country music star Tim McGraw extends his arms toward the audience.

Pharrell Williams flaunts his choreographed routine.   (Paul A. Hebert / Invision/AP)

A look at Ariana Grande from afar, with candy canes, lights and all.   (Paul A. Hebert / Invision/AP)

Host LL Cool J chuckles.   (Frederick M. Brown / Getty Images)

Ariana Grande touches her heart as she burst into her lyrics.   (Paul A. Hebert / Invision / AP)

Mary J. Blige offers a powerful performance.   (Frederick M. Brown / Getty Images)

Ariana Grande seems to be the life of the part amid men.   (Frederick M. Brown / Getty Images)

Adam Levine of Maroon 5 closes his eyes for ample effect.   (Frederick M. Brown / Getty Images)

A look at Ariana Grande from afar as she performs solo in a red dress.   (Frederick M. Brown / Getty Images)

Ariana Grande looks ahead as she sings.   (Robyn Beck /AFPGetty Images)

Tim McGraw gets into his country mojo.