Bard Songs

I've noticed that when I try to sing reveille by using the shortened Rev, I keep failing the song. Is it possible that the code is looking at the old song Reveal? And if so, it is not giving an error message that you don't know that song. The same thing if I try to sing "resi" thinking of Resistance. I attempt the song, get the lag, but continually fail to sing it. Even though I do not know it. Lyllianas