More and more are likely to be singing 'Patience' by Take That or 'Angels' by Robbie Williams, instead of ditties such as 'Twinkle Twinkle Little Star'.
Many mothers and fathers cannot remember the words to traditional rhymes, the poll of 2,000 by The Baby Website found, while more than one in 10 (13 per cent) regarded such songs as out of date.
According to spokeswoman Kathryn Crawford, mothers were being influenced by the music they were listening to during the day.
"We were really surprised to find that mums would rather sing modern pop tunes than traditional lullabies. I expect most mums put the radio on when at home with the baby and the catchy lyrics make it impossible to sing anything else at bedtime," BBC quoted her, as saying.
Nearly half of mothers said they sang to their little ones to calm them when they were upset, while a third always lulled their baby off to sleep with a song, the study found.
But Simon Cooper, of Mother and Baby Music, which produces calming music CDs for parents, said: "Babies need ambient and rhythmic sounds to calm them. That is what they get in the womb. Some pop music will give them this, but certainly not all."