Well, thanks for your responses. I have been waiting to reply because I have not quite known how to say what I have to say without feeling like I am being rude. Pianistimo, I plainly disagree with almost everything you have said. I have listened to this very recording over several times to hear some of the things that you are talking about, but have not found them.
I happen to have quite a strong lower range, and if that was not evident to you in this recording, than the recording itself (or my singing on this particular evening) simply does not reflect what is actually true. So on that note, I do not plan to work more on my lower range than I already do, nor do I plan to pull back on anything at all, unless my teacher advises me to do so.
As far as my vibrato is concerned, I actually have no idea why you would suggest that I have a "wide" vibrato. Frankly, I have heard wide vibratos before and I don't believe I fall into that category. Perhaps you were looking for a different word ? As far as your perspective is concerned, you have indicated that you do not hear my vibrato in my lower range, which is simply not true. On the lowest note of the piece, the "D" just above middle "C", it is there. And it is there throughout. If I were to try to pinpoint where it is "missing" it would have more to do with rhythm than anything else.
I did notice that on sustained notes (which are often in the upper range) I generally do tend to let it out more than on moving notes. However, what jlh has commented on, as far as it being inconsistent and even distracting from the music at times, I am willing to consider with my teacher. I did also notice that on sustained notes in the middle of phrases, I crescendoed... a musical decision I will need to "deal with".
I am thinking more about this :
sometimes to the point of breaking the musical line because for the next note you sing you reset your voice back to where you started. If you cresc, that's fine, but keep the volume going until the musical line suggests a change, or don't cresc so much. This may be happening because when you find a comfortable placement for your voice, you sing comfortably, which is good. The problem might be that when you change vowels or consonants you lose placement and then have to find it again? If that's the case, I would work on doing things that help you keep placement no matter what your mouth is doing.
I am not sure what you mean by "placement". I am sure this is a very common term, however, I have an uncommon amount of ignorance regarding all of this, compared to what people may think I (should) know.
This song seems to have more moods to it than you seem to allow it to have. I don't know the song very well, but that's my initial impression.
This is perceptive, and most likely an affect of the fact that I really have no idea what I am actually singing about

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I have noticed that of late, I prefer singing in my upper range over my lower range and have spent more time up there because it gives me a great thrill to do so

. However, all through school and for a couple of years afterward, I actually sang alto (and sometimes even tenor) in choir.
Pianistimo, as far as the excerpt that you pulled of Cecilia, she is singing the recitative to this aria, not the aria. So, what you are hearing as far as her spoken-singing is a characterstic of the style. However, I agree with jlh in that I need to be clearer with my consonants and as you mentioned in your first post, I need to prepare earlier so my vowels are occuring on the beat.
Overall, I don't know that I have ever been this inspired at singing... and I have certainly never critiqued any kind of singing as in depth as I have here, as a result of both of you posting what you have. So, thanks once again ... and most likely, you WILL be hearing more of me

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m1469