who sings it's like rain on your wedding day
It is the lyrics from the song ironic sung by  Alanis Morissette
Ironic (song)
"Ironic" is a song by Canadian-American singer Alanis Morissette.
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Ironic (song) [SEP] Introduction
"Ironic" is a song by Canadian-American singer Alanis Morissette. It was released in February 1996 as the third single from her third studio album, "Jagged Little Pill" (1995). It was written by Morissette and Glen Ballard, and was produced by him. "Ironic" is a song written in the key of B major, and includes a moderate tempo of eighty-five beats per minute. The lyrics present several situations that are described as "ironic"; this has led to debate as to whether any of these actually match the accepted meaning of "irony". However, some have argued that it does match what is known as situational irony.