Steve Harris, Iron Maiden's bassist and primary songwriter, has stated that his influences include Black Sabbath, Deep Purple, Led Zeppelin, Uriah Heep, Pink Floyd, Genesis, Yes, Jethro Tull, Thin Lizzy, UFO, Queen and Wishbone Ash. In 2010 Harris stated, "I think if anyone wants to understand Maiden's early thing, in particular the harmony guitars, all they have to do is listen to Wishbone Ash's "Argus" album. Thin Lizzy too, but not as much. And then we wanted to have a bit of a prog thing thrown in as well, because I was really into bands like Genesis and Jethro Tull. So you combine all that with the heavy riffs and the speed, and you've got it." In 2004, Harris explained that the band's "heaviness" was inspired by "Black Sabbath and Deep Purple with a bit of Zeppelin thrown in." On top of this, Harris developed his own playing style, which guitarist Janick Gers describes as "more like a rhythm guitar," cited as responsible for the band's galloping style, heard in such songs as "The Trooper" and "Run to the Hills."