You're asking if Instagram's algorithm will miss the faint echoes of a Sony track that your AI couldn't fully strip out? Mate, you're kidding yourself. That system is ruthless. It's not just scanning for the main audio signal; it fingerprints everything down to the background hum. Those overlapping vocals you couldn't clean? That's exactly the kind of noise that triggers a match. You're essentially saying 'I'll hide the smell of smoke by adding more smoke.' The library track you're adding won't overwrite the residual audio - Instagram's content ID compares both against its database. If even a few seconds of the original Sony track remain, you're getting a mute, a block, or a strike. AI removal tools are decent for isolation, but they're not forensic-grade. The platform's detection has gotten tighter, especially with major labels. My advice? Find royalty-free audio or accept the risk. Because hoping the algorithm 'won't notice' is like hoping a bouncer doesn't see you sneaking in through the fire exit.