sentences:  This was despite Hurley refusing to promote the song, and the 12-inch single technically breaking chart rules as it was longer than the allowed 25-minute play time.House music had been steadily growing in popularity since it started underground in the early 1980s, and another number 1 would follow in September, the huge selling "Pump Up The Volume" by British act M|A|R|R|S which was one of the top ten biggest selling songs of the year.For most of the 1980s, the main musical format in the charts was the gramophone record, with songs being released on both 7-inch and 12-inch vinyl singles.