Diffrence between 合唱, 唱和 and 斉唱


I know all of 合唱, 唱和 and 斉唱 mean chorus/choir but are there any differences
between them?




  * 唱和 - sing a song all together / respond (in ceremony) 
  * 合唱 - sing a song in chorus (bass, tenor, alto and soprano) 
  * 斉唱 - sing a song in unison 

