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As much as Joseph wanted to learn piano, he was finding it difficult to get motivated to practice. It always seemed like such a chore, and no matter how hard he tried to will himself to do it, he would always find an excuse not to. Regardless, he had kept paying for lessons even if he didn't go all that often. The embarrassment of showing up to a lesson having not practiced any of what he had learned during the previous session was usually too overwhelming. He was thinking of just quitting altogether when he received a message from his piano instructor.

It read: I can tell you are having a difficult time finding the motivation you need to learn what is required for this instrument. That is why I am firing you as my student. Don’t think you are off the hook though. I know an instructor who will give you the motivation to practice, guaranteed. I have set a lesson up for you with her during our normal time.

Joseph couldn't believe it. He was a bit hurt to be fired as a student, but this new instructor sounded intriguing. If she was really able to motivate him, then he'd better give this new instructor a try. That week, during his usual lesson time slot, he went to the address his previous instructor had given him. He arrived at an old but quaint house that had fallen into mild disrepair. The place seemed a little ominous, to be honest, but Joseph willed himself to knock on the door. 

The woman who answered the door could not be more different from what he was expecting. Joseph thought that a house like this would have some little old lady living inside who had played piano all her life. The woman who greeted Joseph, however, was a Bombshell blonde who looked to be in roughly her late twenties. She was scantily clad in a semi-transparent silken dress that hugged her bountiful assets. Joseph thought he was beginning to see what kind of motivation his previous instructor had in mind.

She led him into her house and sat him at an old piano that had been painted a vibrant blue. She caressed Joseph’s arms as she put his hands in position to go over the basics. He already knew the basics by this point, but he let her continue anyway. Then she instructed him to play. He began playing the small amount of music he had actually practiced, and the strangest thing happened. Joseph’s already semi-erect cock began to stiffen even more. It was as if the music itself was making him horny. The longer he played, the more pleasure he felt until finally he could stand it no more and came in his pants. This sudden orgasm halted his playing, and he looked at his new instructor with a look of shock and embarrassment. She just smiled knowingly at him though, as he scrambled from the chair and ran out the door.

Joseph was so embarrassed that he really didn't want to come back, but as the days passed, he couldn’t help but think about how nice it had been. And that smile that she gave him meant she knew what would happen, surely. So against his better judgment, Joseph decided to go back. Events played out much as they had before, the piano once again bringing him to orgasm. Joseph left again though not as embarrassed as before. This is when the routine began. Joseph began looking forward to practice each week. He even started practicing at home so he could play new things during his “lessons.” What Joseph hadn’t noticed though was how the piano had begun to change him.
At first, it was just mild tenderness around his chest. His dick seemed a little smaller than he remembered. Maybe it had been longer than he thought since his last haircut. As more sessions went by though, it became clear. With each practice session, Piano was slowly feminizing Joseph. Turning him from a fairly average-looking guy into a facsimile of his piano instructor in all but hair color. Joseph really noticed when, for the first time, his music-based orgasm resulted in no ejaculate in his pants whatsoever. By that point, his cock was so small it resembled a clit more than a cock. 

That was months ago though. Joseph had progressed much since then. She was now excellent at piano and opted to just go by Jo now. Joseph seemed far too masculine a name for that busty woman she had become. The orgasms were different but still incredibly intense and wonderful. Her previous instructor had been correct in thinking that this would be a good motivator. Jo was thinking she should drop by and “thank him” personally sometime soon.