Abstract: A first example playback device includes one or more processors and a non-transitory computer-readable medium storing instructions that, when executed by the one or more processors, cause the first playback device to perform functions. The functions include generating a mixed audio signal comprising one or more components of a first audio stream and one or more components of a second audio stream; and playing the mixed audio signal, where the one or more components of the second audio stream of the mixed audio signal played by the first playback device are played in synchrony with a second playback device configured to play the second audio stream. An example non-transitory computer-readable medium and an example method, both related to the first example playback device, are also disclosed herein.

Abstract: The invention provides for a hair extension device and a method of manufacture of the hair extension device. The hair extension device includes at least one length of hair attached to a bendable wire and a comb attached to the wire. The method of manufacture provides the steps for attaching the hair to the formable wire and attaching the formable wire to a comb.

Abstract: An adjustable shelf unit includes a pair of parallel, vertical stanchions each defining a vertical channel. A pair of adjustable braces each has horizontal support surfaces and a proximal end slidably retained in a respective front channel. A locking means is coupled to the proximal end of the braces for releasably securing the braces at a freely selectable elevation in the front channels. A planar element, such as a shelf, is disposed above the braces slidably coupled to the stanchions such that the horizontal surfaces of the braces support the first planar element for load bearing. The horizontal surfaces of the braces remain horizontally disposed as the braces are moved to a freely selectable elevation in the front channels.