Complex sentence: "Unfaithful" received mixed to positive reviews from contemporary music critics; many of them praising its powerful ballad tone, but there was some criticism about its lyrics, which a reviewer called "devoid of remorse".
Split into simpler sentences: Unfaithful received mixed to positive reviews from contemporary music critics with many of them praising its powerful ballad tone. However, there was some criticism of the song's lyrics, which one reviewer called "devoid of remorse".