sing from the same hymnbook

• sing from the same hymnal
• sing from the same hymn sheet

sing from the same hymnbook (third-person singular simple present sings from the same hymnbook, present participle singing from the same hymnbook, simple past sang from the same hymnbook, past participle sung from the same hymnbook)

1. (idiomatic, of two or more people) To make the same or similar statements, especially to express the same opinions in public as a result of a prior agreement.
   • 2002 January 25, Michael Wallace, “Greenspan Puts on a Happier Face”, in BusinessWeek, retrieved 12 Jan. 2009:

     Still, he mostly sang from the same hymnbook as the Bush Administration, saying fundamental fiscal trends are favorable.

• on the same page