Passage: Following the completion of the dialogue sessions, producer Chris Thomas was hired to provide "a fresh pair of ears".  Thomas's background was in music, rather than engineering.  He had worked with Beatles producer George Martin, and was acquainted with Pink Floyd's manager Steve O'Rourke. All four members of the band were engaged in a disagreement over the style of the mix, with Waters and Mason preferring a "dry" and "clean" mix which made more use of the non-musical elements, and Gilmour and Wright preferring a subtler and more "echoey" mix. Thomas later claimed there were no such disagreements, stating "There was no difference in opinion between them, I don't remember Roger once saying that he wanted less echo.  In fact, there were never any hints that they were later going to fall out.  It was a very creative atmosphere.  A lot of fun." Although the truth remains unclear, Thomas's intervention resulted in a welcome compromise between Waters and Gilmour, leaving both entirely satisfied with the end product.  Thomas was responsible for significant changes to the album, including the perfect timing of the echo used on "Us and Them".  He was also present for the recording of "The Great Gig in the Sky" (although Parsons was responsible for hiring Torry). Interviewed in 2006, when asked if he felt his goals had been accomplished in the studio, Waters said:

Question: What manager was Chris Thomas friends with?
Steve O'Rourke