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 stations were subsequently acquired by the Sinclair Broadcast Group; WLWC, in turn, has since been spun off to OTA Broadcasting, LLC. In June 2010, CBS announced the sale of its Norfolk, Virginia CW O&O WGNT (channel 27) to Local TV, then owner of that market's CBS affiliate WTKR-TV (channel 3) (as well as seven former Fox O&O stations). This created the second television duopoly in that market (the first involved LIN TV-owned NBC affiliate WAVY-TV (channel 10) and Fox affiliate WVBT (channel 43)). As part of the deal, Local TV would take over the operations of WGNT through a time