Metadata corruption. in General Poweramp Chatter Posted January 31, 2017 Seeing this, even after a full rescan. iTunes encoded version of Momoiro Clover Z's "Battle and Romance (Disk 2) comes up as all question marks in album and song titles and all tag info. Disk 1 is fine. All perfectly readable in other systems from same SD card media. Looks like something to do with long track titles and Unicode. I can provide / share the offending album if necessary.