I'm relatively new to abc and totally new here. My first post--apologies in advance for length.
In transposing abc tunes I've noticed something odd and cannot figure it out. I've noticed that sometimes when tranposing a tune, the transposed version contains interval changes. Specifically two neighboring notes separated by two semitones in the original version end up being separated by only 1 semitone in the transposed version. I tested this using both ABCedit and ABC-transposer with the same result. This suggests something about the original abc code, but I'm not familiar enough with the nuance of abc code to explain it. One specific example is in transposing from Gm (2-flats) to Em (1 sharp) so I can easily read the music for a whistle. The original phrase (in Gm) is three notes D-C-Bb (C is middle C) with two semitones in each of the two intervals. The transposed phrase (Em) is B-A-G#, which has only one semitone in the second interval. The orginal abc code (Gm) for this interval is "LDCB" (quotes added). I don't know what the L prefix is (a short-hand for commas??). Does this have something to do with it?
Thanks in advance!!