Polyphony and monophony in instruments harpejji and the Chapman stick). Multiphonics can be used with many regular wind instruments to produce two or more notes at once, although this is considered an extended technique. Explicitly polyphonic wind instruments are relatively rare, but do exist. The standard harmonica can easily produce several notes at once. Multichambered ocarinas are manufactured in a number of varieties, including double, triple, and quadruple ocarinas, which use multiple chambers to extend the ocarina's otherwise limited range, but also enable the musician to play more than one note simultaneously. Harmonic ocarinas are specifically designed for polyphony, and in these instruments the range
Owned-and-operated television stations in the United States the network in order to avoid having to finance shutdown costs for The WB. ACME Communications, which operated WB-affiliated stations in small and mid-sized markets, was owned by Jamie Kellner, the network's president from its 1995 launch until 2001. However, neither Time Warner or Tribune considered the ACME stations on the same level as the Tribune stations, nor did Time Warner have any interest in the stations outside of traditional affiliation agreements, or vice versa did ACME have any interest in Time Warner. The ACME stations were among the first awarded "de facto" affiliations for The CW when the network