Populus is a genus of 25–35 species of deciduous flowering plants in the family Salicaceae, native to most of the Northern Hemisphere. English names variously applied to different species include poplar (/ˈpɒp.lər/), aspen, and cottonwood.

In the September 2006 issue of Science, it was announced that the Western Balsam Poplar (P. trichocarpa) was the first tree to have its full DNA code sequenced.

The genus has a large genetic diversity, and can grow from anywhere between 15–50 m (50 to 165 ft) tall, with trunks of up to 2.5 m (8 ft) diameter.

The bark on young trees is smooth, white to greenish or dark grey, often with conspicuous lenticels; on old trees it remains smooth in some species, but becomes rough and deeply fissured in others. The shoots are stout, with (unlike in the related willows) the terminal bud present. The leaves are spirally arranged, and vary in shape from triangular to circular or (rarely) lobed, and with a long petiole; in species in the sections Populus and Aigeiros, the petioles are laterally flattened, so that breezes easily cause the leaves to wobble back and forth, giving the whole tree a "twinkling" appearance in a breeze. Leaf size is very variable even on a single tree, typically with small leaves on side shoots, and very large leaves on strong-growing lead shoots. The leaves often turn bright gold to yellow before they fall during autumn.

Matthew Frederick Robert Good (born June 29, 1971) is a Canadian rock musician. He was the lead singer for the Matthew Good Band, one of Canada's most successful alternative rock bands in the 1990s, before dissolving the band in 2002. Other band members included drummer Ian Browne, guitarist/keyboardist Dave Genn, and original bassist Geoff Lloyd, later replaced by Rich Priske. In the years since the Matthew Good Band's disbanding, Good has pursued a solo career and established himself as a political activist and blogger. He is also credited with coining the phrase first world problems.

Good's early career in music involved a variety of folk demos and a stint as the lead singer of a folk band, the Rodchester Kings. Matthew Good and guitarist Simon Woodcock were discovered at an open mic at Simon Fraser University by manager Brent Christensen. Early Rodchester Kings demos were recorded at Fragrant Time Records in Burnaby by Greg Wasmuth and Steven Codling.

The Matthew Good Band was formed in Coquitlam, British Columbia in 1993. In late 1993 they recorded a short demo tape called "Euphony", which featured acoustic songs like "Mercy Misses You", "Heather's Like Sunday", and the title track "Euphony". In 1994, they won a prize in CFOX 99.3's annual local Vancouver independent artist competition "Vancouver Seeds". The prize included recording time at a local studio/recording school, where, in September 1994, they recorded "15 hours on a September Thursday". This demo tape included songs like "Second Sun", "Dancing Invisible", and "Push". In December 1994, the band signed a publishing deal with EMI Publishing.