This first part of the tetralogy, which is the prologue, was not divided into acts.
The first act of Siegfried is one of the most dramatic in the tetralogy.
This series may be divided into two, each forming a tetralogy, or group of four plays.
He must be competently instructed in the tetralogy, or first four rules.
The drama itself comes second in the tetralogy of the Ring, being preceded by the Rheingold.
Wagner was obliged to accept this solution of his difficulties, and thus Bayreuth lost the sole right to the tetralogy.
He saw what was happening there with regard to matters of art, and that he could not dream of producing his tetralogy.
But this latter is more properly to be considered as the overture to a trilogy than as the first drama of a tetralogy.
Wagner never tired of exploiting the variation form in his operas, particularly in the tetralogy.
"Richard III" is the fourth play of a tetralogy manifestly planned before the earlier members were completed.
tetralogy te·tral·o·gy (tě-trāl'ə-jē, -trŏl'-)
A complex of four symptoms.