public static string GetToneLetter(this ToneNameEnum tone, bool sharp = false)
{
var ret = string.Empty;
if (tone.IsNotNull())
{
if (sharp && tone.IsFlat())
{
ret = tone.PreviousSemiNote().GetToneLetter();
}
else
{
tone.ToStringEx().IfNotEmpty(x => ret = x.First().ToString());
}
}
return(ret);
}
