A friend who knows much more about music than I says:

New Findings on the Mozart Effect:
     
    A recent report now says that the Mozart effect is another charming urban legend.
     
    The bad news for the hip urban professionals: playing  Mozart for your designer baby will not improve his IQ or help him get into that exclusive pre-school. He'll just have to get admitted to Harvard  some other way. Of course, we're all better off for listening to Mozart purely for the pleasure of it. However, one wonders whether, if playing Mozart sonatas for little Tiffany or Jason could boost their intelligence, what would happen if other composers were played during the kiddies' developmental time?

    LISZT EFFECT: Child speaks rapidly and extravagantly, but never really says anything  important.

    BRUCKNER EFFECT: Child speaks very slowly and repeats himself frequently. Gains reputation for profundity.

    WAGNER EFFECT: Child becomes a megalomaniac. May eventually marry his sister.

    MAHLER EFFECT: Child continually screams - at great length and
    volume - that he's dying.

    SCHOENBERG EFFECT: Child never repeats a word until he's used all the other words in his vocabulary. Sometimes talks backwards.  Eventually, people stop listening to him. Child blames them for their inability to understand him.

    IVES EFFECT: The child develops a remarkable ability to carry on  several separate conversations at once.

    GLASS EFFECT: The child tends to repeat himself over and over and over and over and over and over and over and over and over and over and over and over and over again.

    STRAVINSKY EFFECT: The child is prone to savage, guttural and profane outbursts that often lead to fighting and pandemonium in the preschool.

    BRAHMS EFFECT: The child is able to speak beautifully as long as his sentences contain a multiple of three words (3, 6, 9, 12, etc.)  However, his sentences containing 4 or 8 words are strangely uninspired.

    CAGE EFFECT: Child says nothing for 4 minutes, 33 seconds.
    (Preferred by 10 out of 9 classroom teachers.)