I'm looking on a voice (singing) a little like an instrument where you don't use muscles on fingers, but muscles inside your neck/throat.
I got some practice in playing bass (guitar/double-bass) and also I'm dancing/singin in folklore group (supported by cimbali band). From perspective of others, I/we 've found that I'm not able to sing clearly the melody (reproduce it, nor the pitch, by voice). However, in my head I can hear my voice as clear production of the "original" melody, which suits the singing/playing of others.
Getting bigger perspective, while playing the instrument, I can produce by ear the tones that fits the played song and this is also confirmed by others. Also, when hearing somebody else, I can hear if his voice/his playing is or isn't in tune.
Last, but not least, I haven't been playing any instrument in my early age and I haven't got any musical "leading" till my 20 years.
I cannot find what exactly is my issue with the hearing and I'd like to find out a way how to improve it.
Q is similar to this ( Unable to sing, but not tone deaf ), but I don't feel this is the same (even that I agree that the basic ear traning can help with the topic).