>>>Howdy!
>>>
>>>I'm having some trouble coming up with a regex matching expression for a small string format:
>>>

>>>C3#:4.
>>>-or-
>>>F4-:16t
>>>-or-
>>>E2b
>>>

>>>
>>>These represent musical notes.
>>>
>>>"C" is the base note (A - G, uppercase only).
>>>"3" is the octave (1 - 6).
>>>"#" is the accidental (optional: can be "#" sharp, "b" flat, "-" natural, or "" omitted).
>>>":" is required if anything follows...
>>>"4" is the duration (1 whole, 2 half, 4 quarter, 8 eighth, 16 sixteenth, 32 thirtysecond)
>>>"." is the duration modifier (optional: can be "." dotted, "t" triplet, or "" omitted)
>>>
>>>So the first char must be [A-G] and the second char must be [1-6]. After this it gets a little hairy. The accidental is optional, so it's possible to have the colon immediately follow the octave digit. If there is a colon, then there must be a duration digit and there cannot be a duration modifier without a duration digit.
>>>
>>>Thanks!
>>
>>Keith,
>>
>>No testing, but have a go at this
>>

>>^([A-G][1-6][-#b]?(:(1|2|4|8|16|32)[.t]?)?)$
>>

>
>Thank you Gregory, it works well!

You're welcome. RegEx is one of my pets