Unfortunately, no. Music Man was not introduced to the FNAF series until Freddy Fazbear’s Pizzeria Simulator, which is the sixth game in the core series. However, since Music Man mysteriously uses the FNAF 1 jumpscare sound effect in Ultimate Custom Night instead of the same sound effect the rest of the Pizzeria Simulator animatronics in the game use, some fan theories (and memes) have been tossed around about Music Man secretly being in the FNAF franchise all along. As much as we’d all like for that to be the case, however, Music Man does not actually appear in FNAF 1.