 It contains compositional samples of "Supersonic", a song written by Dania Maria Birks, Juana Michelle Burns, Juanita A. Lee, Kim Nazel, and Fatima Shaheed and performed by J. J. Fad, and "Give It All You Got", a song written by Derrick Rahming and popularized by Afro-Rican.The song's bridge contains an interpolation of "Night Train" by Jimmy Forrest and James Brown.The critical reception of "Fergalicious" was positive, with many praising it as a catchy and danceable track.