Cassie has already responded to the range question, regarding Love Kills. Using Badassalterego's drawing, the song would start and end, as marked with dotted line, compared to the red bracket it is only about half the range:
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The reason, it seems to have so much more range than it actually does, is a couple of effects that have been put to brilliant use, and that you can find in multiple Queen songs.
a) The perception of range is created with the guitar instead of being in the vocals, and it is actually done by opening up the accords wider, rather than just by climbing. At the beginning of the songs, the harmonies are much closer together than at the end.
b) There obviously is an upward motion in both the vocals as well as the guitar in each phrase, but then, the song circles around, a new instrument is added and the sound wall is increased, which feels as if the song is sung higher up, when in reality, the vocals circle around and climb
c) The change in key is a common way to create a sense of height and forward motion to the listener. The trick is, that technically, after that key change, they don't stay there, which many other songs do. They actually come back to the original key (with the more open harmonies), but even I did not notice that, on first listen, and had to try to play the melody to figure that one out. Brilliant orchestral song-writing here.
d) The volume increase and build (of the soundwall) gives the impression of height.
All this together, makes it seem, as if the range was substantial, when really it is still quite a common song range for a ballad.
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ETA: Depending on your browser, that line may not show up in right location, but I don't have the picture editing software to put the line into the drawing myself. I hope the display works for most folks, at least. If it does not show up right for you: The F3# (lowest note in LK) is a black note exactly half way between the letters C3 and C4. The B4 (highest note in LK) is the white key right below the letter C5.