 " Crazy in Love " is a song from American singer Beyoncé 's debut solo album Dangerously in Love ( 2003 ) . Beyoncé wrote the song with Rich Harrison , Jay Z , and Eugene Record , and produced it with Harrison . " Crazy in Love " is an R & B and pop love song that incorporates elements of hip hop , soul , and 1970s @-@ style funk music . Its lyrics describe a romantic obsession that causes the protagonist to act out of character . Jay Z contributes a <unk> verse to the song and is credited as a featured performer . The French horn @-@ based hook samples " Are You My Woman ( Tell Me So ) " , a 1970 song by the Chi @-@ Lites . 
