Congratulations on receiving my first "below a 3" rating, "Sick, Sick, Sick"! This song has plagued me ever since the first Rock Band, and for good reasons. It is a song I can only describe as the "song that never gets FC'd and rots in my song library with no score attached to it". Yep, it is one of those songs, the kind that is so unpleasant to play that you go out of your way to avoid it. It seems harsh, I know, but I will attempt to justify my blinding rage at this song in the most detail as possible.
Well, my first playthrough of this song was abysmal, to say the least. Right away there is a broken talky about ten seconds in: a disarmingly quick "Uh". I could not hit this talky no matter how hard I tried in RB1, and in RB2 I could hit it at least every one out of three attempts (in RB3 I can consistently hit it). It is not as bad as Inside Out in which the talky simply refuses to recognize anything, but it is still a very fickle phrase. My only advice is to kind of match the guitar tone and timing, complete with the pitchslide down; it seems to work best for me.
Okay, I am done with that mini rant about the very first phrase in the song. Getting back on track, the verses come in shortly after, with the tone matching the guitar's. The chart is very monotone, with slight fluctuations through a single pitch. The lyrics are very rapid, so if you are not familiar with the song I suggest you go over the lyrics a few times before attempting it. I say so because the lyrics' timing will help you match the aforementioned fluctuations. There is a confusingly charted phrase "Lose the halo, don't need to resist". The bolded parts drop off from the monotone to a pitch that seems to be drowned out by the other instruments; if you are having trouble matching the pitch, be sure to listen to it in practice mode. I myself had to pitchshift in order to hit it consistently.
The chorus is exceedingly simple, with only two high pitches to make it up. There is not much to say outside of be sure to know what pitches they are exactly, because sometimes I felt that even though I was singing on-key, I just was not getting enough of the "pie" filled.
That is a central theme surrounding this song: the phrases seem to sound a little off, like they were purposely charted slightly wrong. It could be that Josh Homme's original vocals are just hard to pick out because of his monotone delivery, but I cannot shake the paranoid feeling that my arrow is a few pixels off from the lines.
My frustration only increases on verse 2, in which it starts lower (and very flat) than verse one's pitch. It soon corrects itself later, and repeats the pattern. After that comes the chorus again, but at the end of the final phrase, it shifts upward to match the guitar's pitch.
The bridge is a nightmare, with off notes littering entire phrases. The only way I can describe it is as though each monotone pitch descends like a gradual staircase, eventually reaching down to the literal floor of the vocal space. The "floor" pitch again matches the guitar's riff, but a whole octave lower.
Again comes the chorus, with another variation: "I'm gonna take / I don't wanna change" More monotone, but different pitches for each monotone bit. A surprise second bridge hits the player, "Baby, come out..." with incredibly off-key pitches that are again hard to put to words. After that last fiasco, the chorus simply repeats to the end.
This song is incredibly underrated in difficulty. Off-key notes, very low notes, fast lyrics, and inconsistent verses/choruses make it a challenge to any vocalist willing enough to subject themselves to this mess of a song. A textbook example of how being hard does not instantly make it fun. It sat un-FC'd in my library until the very day before RB3 came out, and thus I have a long and tumultuous history with it.