Unfortunately, the record function doesn't work to well. The volume is low. Not sure if the crystal mic is dead, or if it is something else. Will need to do some troubleshooting.
Another oddity is that when I use rechargeable batteries, the speed is OK, but if I use alkaline, the speed is too fast. I assume this means that the original recording was done with NiCd batteries.
My mother had this identical machine back in the 1970s. I remember trying to record "Baker Street" by Gerry Raftery and "Gemini Dream" by the Moody Blues one time. It quite seriously sucked for that.