Appropriate or Inappropriate use of music?

Throughout the movie Tsotsi, their is a common theme of music. From the opening scene to the closing credits you hear music playing. This movie took place is South Africa, where music is a huge part of their culture so naturally you hear African music played throughout the movie. You can hear up beat hip hop music playing when the main characters are at a bar drinking and talking, along with throughout the film where their is social gatherings, and in my eyes this is appropriate use of music. However, in different parts of this film you hear music playing where you may not consider it to be appropriate. For example, when Tsotsi is in his house and the baby starts to cry he decides to turn on the radio and have hip hop, gangster music playing for two different reasons. One reason is so that no one around his house can hear the baby cry and secondly as a attempt to get the baby to stop crying. To me this was an inappropriate way to use music because he could of chosen a more soothing type of music to help calm the baby.