Metal Gear Solid 5: The Phantom Pain - how to get all 12 acquired cassette tapes

Acquired cassette tapes offer bonuses to the player - here's how to get them all and what effect they have.

Acquired cassettes in Metal Gear Solid 5: The Phantom Pain are surprisingly handy. When played through the speaker of the iDroid they produce special effects, helping Snake in his missions. However, using a tape will cause it to disappear from you inventory, at which point you need to return to where you found or it complete the required criteria again.

Here's how to get all 12 tapes:

Tape: Afghanistan Music
Effect: Soldiers in Afghanistan go to sleep unless they are in Combat Status.
How to get it: Search the Wakh Sind Barracks

Tape: Central Africa Music
Effect: Soldiers in Africa go to sleep unless they are in Combat Status.
How to get it: Look in the Bampeve Plantation

Tape: Paz's Humming
Effect: Wandering Mother Base Soldiers approach you or won't run when you are nearby.
How to get it: Head over to Mother Base's Medical Platform and talk with Paz

Tape: Quiet's Humming
Effect: You'll have a steady hand while holding a weapon in first person.
How to get it: Complete a mission with Quiet. Your Bond must be at least 60 percent or over

Tape: Afghanistan Soviet Soldier
Effect: Avoid an enemy's line of sight to deactivate Combat Status.
How to get it: Search Sakhra Ee Village

Tape: Central Africa PF Soldier
Effect: Avoid an enemy's line of sight to deactivate Combat Status.
How to get it: Check in Nova Braga Airport

Tape: Soldier with Stomachace
Effect: While near a toilet, this tape eliminates enemy suspicion. Won't work during Combat Status.
How to get it: Search different villages, including Masa Village and Shago Village

Tape: Bird
Effect: Birds won't fly away unless you're too close. Will also cancel suspicion, but doesn't work during Combat Status.
How to get it: Fulton extract a bird, then go to the Animal Conservation Platform and look inside its cage.

Tape: Goat
Effect: Goats won't flee unless you're too close. Will also cancel suspicion, but doesn't work during Combat Status.
How to get it: Fulton extract a goat, then go to the Animal Conservation Platform and search outside its cage.

Tape: Horse
Effect: Horses won't flee unless you're too close. Will also cancel suspicion, but doesn't work during Combat Status.
How to get it: Fulton extract a horse, then go to the Animal Conservation Platform and search around the outside of its cage.

Tape: Wolf
Effect: Wolves won't flee unless you're too close. Will also cancel suspicion, but doesn't work during Combat Status.
How to get it: Fulton extract a wolf, then go to the Animal Conservation Platform and look outside its cage.

Tape: Bear
Effect: Bears won't flee unless you're too close. Will also cancel suspicion, but doesn't work during Combat Status.
How to get it: Fulton extract a bear, then go to the Animal Conservation Platform and check outside its cage.