Final answer:
Musical genres that blend serious concert music with rock elements are known as Art rock, a genre exemplified by its ambition to be more sophisticated and experimental.
Step-by-step explanation:
The genre of music that includes an effective blend of serious concert music and rock is called Art rock. Art rock is known for its eclectic combination of electric instruments, incorporating elements from various other musical styles such as gospel, blues, country, jazz, and R&B, which all contributed to the earlier formation of rock and roll. Notably, the new genre of rock and roll was pioneered by artists like Bill Haley and His Comets, with hits like "Rock Around the Clock," and Chuck Berry, known for his dazzling guitar solos and rhythmic blues fused with rock elements. Art rock extended these innovations by introducing experimental and avant-garde influences to rock music, aiming for a more ambitious and sophisticated sound.