As per Concept,
Five Colors in musical nodes signify the rhythm of the five continents.
The faces of different cultures represents the different cultures spreaded all over the world.
but mostly it signify that there is different languages, Cultures here in the world but there is one tune that contains all the cultures of the world get together & celebrating this festival and that is cultural diversity.
This logo has all the elements to represent this festival
1) Cultural Rhythm of the World
2) Cultural Celebration of the World
3) Cultural tune of the World
4) Cultural unity of the World
and that best symbolizes this logo for "International Festival of Cultural Diversity"