Taken many years ago at dawn in my front yard. As far as I know, it was a type of Organ Pipe cactus. The flowers only bloom at night and quickly begin to droop once the sun has risen.
Below is an early painting of mine using one of my photos of this flower. There are many parts I do not like in this. Mainly, it is the nit picky, tight, paint between the line parts. I think I was in transition from being nit picky to painting much more free. If I still had the painting, I'd probably paint over the parts I don't like. It belongs to my son and daughter-in-law. I do love the part with the cactus flower plus the rose and tulips. It's interesting looking at older work and seeing how I have evolved. 
Zen Bloom at Dawn
24 in x 36 in
acrylic on canvas
The cropped painting more to my liking. I think it solves the problem and will re-frame it to
look like this. 
thesnakeandiandthebutterfly 
Ahhhhh, Bach! 😆 I was reminded of a MASH episode. Radar O'Reilly was gonna have a date with this nurse who was all cultured, knowledgeable and into Classical music. Hawkeye & BJ were prepping him for his date. They told him that if he ever just found himself totally lost, to just feign deep thought and go, "Ahhhhh, Bach!" Radar did follow that advice at one point when he was lost. I believe Radar used it in a point of a conversation that had nothing to do with Bach or music for that matter. Needless to say, the bewildered nurse goes, "WHAT?" 😆 Anyway, I too am VERY curious to find out what is behind the Key designations in Classic music song titles. I'll check it out later today.
It is like a cropping in photography, sometimes you can emphasize details with just simple cutting on a sides 🙂