Complex sentence: In an interview in 2008 with Mojo, when asked who had composed Echoes, Wright stated he had composed the long piano intro and the main chord progression of the song, in the same interview he confirmed that Waters wrote the lyrics.
Split into simpler sentences: In an interview in 2008 with Mojo, when asked who had composed Echoes, Wright stated he had composed the long piano intro and the main chord progression of the song. In the same interview he confirmed that Waters wrote the lyrics.