Octave Stretches

I've got a decent ear and an average singing voice, but there are some melodies I struggle to learn and reproduce. I've already alluded to a few by Madison Cunningham that I had to literally write down to learn. And even when the notes are written down, I've occasionally had a devil of a time nailing parts in really ambitious music (I was indeed present in the bass section of a New York City Master Chorale rendition of "Chichester Psalms," doing my best to follow, but one vision of my personal hell is the prospect of being subjected to a recording of my vocal performance that night apart from the chorus).

Another category of challenge: melodies that stretch beyond an octave. Again, I'm not talking about the difficulty of covering the range of notes per se, a la "Star Spangled Banner," but the actual run of notes within the line. I can think of a few that I really had to teach myself through trial and error: the title line of David Bowie's "Sound and Vision," for one, which traces an E-minor seventh chord up a 10-note span (I usually sing it in B-minor):

It's tricky enough to execute that I've noticed how few cover versions really nail it: Beck arranged the song within an inch of its life but didn't really even try to approximate that vocal line, and of the covers I've sampled, only Franz Ferdinand's pretty-much-exact copy does it a la Bowie. (In the original, it should be noted, he sings it the first time in a quiet bass, only to leap up for the final iteration—an octave upon an octave.)

Another one I've never quite gotten my voice around, though I've parsed it, is from Rufus Wainwright's gorgeously modal "Greek Song," which traces an A-dominant-seventh chord down—a very peculiar and delicious sound. Just try to sing that "anybody's hide":

That one doesn't have many covers that I can find, but the few YouTube stabs I've seen show good-faith efforts to hit those notes as written.

Another example I thought of was this, from Elvis Costello's "God Give Me Strength" (seen here in the Audra McDonald sheet music version):

That one has been less hard for me to learn, I guess because the chord outlined by those notes—an evocative A-minor ninth—is stickier, more magnetic somehow. It wants to be sung that way. And sometimes those big, stark intervals are easier to land than tracing the odder chord shapes I outlined above.

Can you think of other exceptionally tough melodies along these lines?