English vocalist Jessie J, and legendary crooner Tom Jones took on The Righteous Brothers’ classic 1964 pop hit “You’ve Lost That Lovin’ Feelin'” as the third performance of the 57th Grammy Awards.

Tom Jones showed the audience his classic bellow, while J kept pace with the veteran singer.

The performance drew some harsh criticism (and some hysterical tweets) online for its slow pace.

Also Read: Grammys 2015 Winners and Nominees: The Complete List (Updating Live)

#TomJones and @JessieJ singing "That Loving Feeling" by The Righteous Brothers, not a great choice after a slow performance #Grammys2015

— InfectiousMagazine (@InfectiousMag) February 9, 2015

The best thing about that @JessieJ + #TomJones combo is that it's over #Grammys2015

— Emily Stone (@emilyFOX5DC) February 9, 2015

Poor @JessieJ, always the striver #Grammys2015 @TheGRAMMYs

— annkpowers (@annkpowers) February 9, 2015

So @JessieJ is the most talented artist that I can never stand. Better heard than seen. Sorry #Grammys2015

— Edward EJ Jamele (@EdwardJamele) February 9, 2015

Why isn't @JessieJ singing one of her million hit songs. What the hell is this nonsense. #boring #Grammys2015

— Kelly Roberts (@KellyKKRoberts) February 9, 2015

Some went right for the jugular, trashing Jessie J’s outfit:

Jessie J your voice is amazing but what are you wearing girl?!? #TheGrammys #Grammys2015

— Jannie (@angeljp143) February 9, 2015

"@TheatreProblems: Jessie J looks like a CHICAGO cast member who ran through some barbed wire. #Grammys2015 #TheatreProblems" @eqcox

— Maddy Brown (@Ijinxedyou) February 9, 2015

Damn you, #JessieJ, I was planning to wear that same outfit to Starbucks tomorrow. #Grammys2015

— NatalieHopeMcDonald (@nataliemcd) February 9, 2015

Watch the duo’s performance here.