In many bands, such as The Who, Led Zeppelin, Living Colour, Queen, The Stone Roses and Oasis, the lead guitarist may share spokesman responsibilities with the lead singer. Usually, this is derived from that guitarist's specific role as a co-songwriter, co-founder and/or co-vocalist. Also in some cases, there are two frontmen, such as Alice in Chains, with singer Layne Staley (and later William DuVall) sharing vocal duties with guitarist Jerry Cantrell, or Underoath, with singers Spencer Chamberlain and Aaron Gillespie (drummer) sharing vocal duties. Another example is Blink-182, in which vocal duties are split between bassist Mark Hoppus and guitarist Tom DeLonge. Hoppus usually carries out most media either by himself or together with DeLonge, while the band's other member, drummer Travis Barker, usually remains quiet. Linkin Park had two vocalists as well, with Chester Bennington handling most singing and Mike Shinoda focused more on rapping lines; both were considered frontmen. Another example is the thrash metal band Metallica, in which James Hetfield (lead singer and rhythm guitarist) and Lars Ulrich (drummer) share the spokesperson duties for being both founders and the only members who have never left the band.