Evening with Angels is described as a "textless song-cycle": the title derives from Wallace Stevens: but the concealed poems, which provide atmosphere, mood, and specific rhythmic and melodic colour almost throughout, are all by Tennyson.  Originally these "songs without voices" were held within a thrice-given frame of furious constructivism (guilty palliation of a relinquished modernist idiom?) which later revizions (the last in 1993) removed (together with a further Tennyson Lyric that still awaits a good home).