Horizont (from Russia) was a progressive rock band released two albums in the 80's. Their debut "Summer In Town"('85) was purely symphonic prog (somewhere between Yes and ELP), remarkable thing on the album is that they use vocals only as atmospheric voices. Their second album "Portrait Of A Boy"('89), totally different from their first one, was purely Univers Zero influenced RIO.
Написано, что "группа образовалась приблизительно в 1976 — 1978 годах в Чебоксарах."
А на прогархиве - http://www.progarchives.com/artist.asp?id=916 - сказано "HORIZONT (not to be confused with a Swedish band of the same name) began in the 70's as a school band in the Russian city of Gorky (now called Nizhny Novogrod)". Кому верить? Понятно, что от Чебоксар до Нижнего расстояние небольшое, но все же.