If this would have been the case then the app wouldn't even have got installed. The apk installer would have shown 'parse error' but the app gets installed in my case and I also can open it and see walkman animation but the app force closes there and says 'Unfortunately, Walkaman has stopped'.
my current devices is xperia XZ Premium run on stock android 9,
due to the new post im curious what does it work.
cause after xperia z 『 WALKMAN 』 is replace to 『 MUSIC 』,
anyway i wonder is due to im sony devices or what , after install it , the app said
『This app ts made for old android , so it might not working anymore。plz try updata or contract with developer』
so just install lastest sony music i guess so