Select all the American musical styles that emerged after World War II.Multiple select question.SwingMinimalismChance music12-bar blues

To address the question regarding American musical styles that emerged after World War II, we need to evaluate each option:

1. Swing: This style primarily developed in the 1930s and was prominent before the end of World War II. Therefore, it is not a post-war style.

2. Minimalism: This musical style emerged in the mid-1960s, after WWII. It is characterized by repetitive motifs and a focus on simplicity. Thus, it is a post-war style.

3. Chance Music: Also known as Aleatoric music, this style gained prominence post-WWII, particularly associated with composers like John Cage in the 1950s. Therefore, it is considered a post-war style.

4. 12-bar blues: This is a musical form that has been around well before WWII, rooted in early blues music. Thus, it is not a post-war style.

Final Answer

The American musical styles that emerged after World War II are:

• Minimalism
• Chance music