The two pianists had a good marriage. They always were in a chord. In one to two sentences, interpret the figure of speech in the statement. Make sure to include the word or language being used in the figure of speech and explain the deeper meaning.

The figure of speech used in the statement is a pun, with the play on words being the word "chord." The deeper meaning is that the pianists were always in sync and harmonious, akin to playing musical chords together.