The American occupation of the Dominican Republic begins. This leads to a pop form called pambiche[?], invented for American soldiers that couldn't dance to the harder forms, and is also responsible for nationalist elements being added to the lyrics, foreshadowing the rise of Rafael Trujillo
The rumba's popularity begins to spread in Cuba and abroad, while Arsenio Rodriguez[?] develops the conjunto band, using the septeto[?] as a basis; both these changes signal the roots of salsa
As rural Mexicans begin moving into the cities, trumpets are added to traditional mariachi[?] bands, and the music develops a more pronounced nationalist bent; Silvestre Vargas[?] soon becomes the most popular mariachi performer
... and a continuous quest for the "musical unknown"; more often than not, exploration and a search for continual newness were the hallmarks of their liv ...