Diamine Bach. Last month was Mozart’s birthday, so I did a one minute ink review of Diamine Mozart ink, here. Bach is another ink from Diamine’s music set, and another lovely dark reddish brown. Bach, the ink, is darker than Mozart.
An everyday ink? Yes, it could be, for me. I love a dark brown.
Here is a comparison with Bach on the left and Mozart on the right. When you put them in the same pen, they look very close in color. Sometimes I can hardly tell them apart.
Fountain Pen Follies 
Is it my monitor settings, or do these look like basically the same ink just more and less saturated? Either way, both quite nice!
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I’ve never been sure. They look soooooo similar in the right pen, that it could be, and I go back and forth on it. But I lean to the theory that they are slightly different formulas. I should do chromatography to figure it out. Cool!
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