Solo albums, for the most part, present artists with the opportunity to  indulge in experiments their bandmates would reject. Take Thom Yorke going fully electronic on The Eraser, or Sigur Ros’ Jónsi’s journey into  glitch-pop on his new album Shiver: Neither proved to be too much of a deviation from their main projects’ sound, but provided them with a detour that musicians often need to get out of their system between “proper” albums. The lowered expectations that can come with a solo album free up an artist to make whatever they want without restriction, and can sometimes lead to something…