Example 10. Timbral heterogeneity (sustained, stable): Debussy, La Mer, iii, mm. 183–186. Note that the glockenspiel sounds two octaves higher than written. The rest of the orchestra is not shown. Audio example 7a is English horn, 7b adds the horn, 7c adds the glockenspiel, and 7d has the full context [simulation from OrchPlayMusic Library]

7a. English horn

7b. English horn and horn

7c. English horn, horn, and glockenspiel

7d. Full context