It

Pronome

  was

Auxiliar

  due to

  be

Auxiliar

  released

Verbo

  as

Adposición

  a

Determinador

  single

Adxectivo

,  but

Conxunción coordinadora

  this

Pronome

  never

Adverbio

  happened

Verbo

.

It was due to be released as a single, but this never happened.

It was due to be released as a single, but this never happened.