input: Adaptations to consider cultural customs: Anything in these peoples' way of life which is not indissolubly bound up with superstition and error she [the Church] studies with sympathy and, if possible, preserves intact. Sometimes in fact she admits such things into the liturgy itself, so long as they harmonize with its true and authentic spirit. (Sacrosanctum Concilium 37) [Things to think about] 
output: This doesn't mean bring a death metal rock band into Mass. However, reverent music, that raises the Spirit, which is in a style that is part of a "people's way of life" can certainly be considered. For instance, in some Churches modern praise and worship could be considered if there are many young families. In Africa, people have a natural sense of rhythm. Dampening that by forcing 16th century white European classical music on them is not the way to win their hearts for Jesus. Forcing them to stand up straight and never move to the music because white Europeans do it that way, is not what Jesus is about. The Church is growing fast in Africa. Note: Trying to force European culture on indigenous people was an absolute disaster in the early 1900s when the pre-Vatican Church set up residential schools for indigenous children in North America. In North America having too much movement (such as liturgical dance) during Mass would not be appropriate because it is not core to our culture. The Vatican is recommending Gregorian Chant be restored, and that music be Catholic.