Conclusion

You have now corrected the whole text. Here it is once again, as it should have been written - with the errors corrected, and with alternatives given in brackets.

This article talks about the effects of music on people (the effects music has on people). The power of music is universal; it has numerous effects (a wide range of effects) on people. Some people listen to music every day for hours. Other people have difficulty (in) recognizing music. Music is also used for therapy (is used for therapy too). Some experiments have shown that music has different effects on patients. Music can be used to help people relax.

POUR APPROFONDIR LES POINTS GRAMMATICAUX ESQUISSES DANS LE COMMENTAIRE, CONSULTEZ LES FICHES GRAMMATICALES (DISPONIBLES SUR LE PARCOURS LIBRE).