Who wrote the song Home performed by Michael Buble?

This song was performed by Westlife. I am curious whether Buble or Westlife was the original artist.

The song "Home" was written by Michael Buble. Bearing that in mind I guess he was the original artist.

Since when did Westlife EVER do anything original? Michael had a hit with Home in 2005 and he wrote it too.

Bubl茅 was engaged to long-time girlfriend Debbie Timuss, a stage actor, dancer, and singer. Both were in the musicals Red Rock Diner in 1996[1] and Dean Regan's Forever Swing in 1998.[2][3] Timuss was listed as one of the dedicatees in Bubl茅's self-titled album Michael Bubl茅 and It's Time, and as background vocalist on It's Time. While away in Italy, Bubl茅 co-wrote the hit single "Home" for Timuss.[4][5] She was also featured in his Home music video. They were later engaged in 2004 and ended their relationship in November 2005

According to the published sheet music for the song, Home, the music was composed by Michael Buble and Alan Chang and the lyrics were written by Michael Buble, Alan Chang and Amy Foster-Gillies.
Just so you know, one of the best ways of finding out who wrote songs, is to find the authorized sheet music for the song. This is how I found the sheet music for Home, at the Michael Buble Sheet Music website ( http://download-sheet-music-online.com/m... ).