How exactly does an in-ear piece (the ones singers use) work? What exactly are they used for? - Quora
![Amazon.com: BASN Bsinger BC100 in Ear Monitor Headphone Universal Fit Noise Cancelling Earphone for Musician Singer Band Studio Audiophile : Electronics Amazon.com: BASN Bsinger BC100 in Ear Monitor Headphone Universal Fit Noise Cancelling Earphone for Musician Singer Band Studio Audiophile : Electronics](https://m.media-amazon.com/images/I/61a5R7ZX2tL.jpg)
Amazon.com: BASN Bsinger BC100 in Ear Monitor Headphone Universal Fit Noise Cancelling Earphone for Musician Singer Band Studio Audiophile : Electronics
![Earpiece Monitor Singers Monitor Headphone Earphone Monitor Stereo 3.5mm Plug Professional Monitor System Earbuds For S3 Band - Walmart.com Earpiece Monitor Singers Monitor Headphone Earphone Monitor Stereo 3.5mm Plug Professional Monitor System Earbuds For S3 Band - Walmart.com](https://i5.walmartimages.com/seo/Earpiece-Monitor-Singers-Monitor-Headphone-Earphone-Monitor-Stereo-3-5mm-Plug-Professional-Monitor-System-Earbuds-For-S3-Band_291f9c58-236a-4381-9a77-88c5d4e99dce.f18dbb1166b5d173f08d51ff3d19aa11.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Earpiece Monitor Singers Monitor Headphone Earphone Monitor Stereo 3.5mm Plug Professional Monitor System Earbuds For S3 Band - Walmart.com
What is the device that singers have in he ears in their performances and what is its purpose? - Quora
![Amazon.com: BASN Professional in Ear Monitor Headphones for Singers Drummers Musicians with MMCX Connector IEM Earphones (Pro Clear Colorful) : Electronics Amazon.com: BASN Professional in Ear Monitor Headphones for Singers Drummers Musicians with MMCX Connector IEM Earphones (Pro Clear Colorful) : Electronics](https://m.media-amazon.com/images/I/61s0Z20P7LL._AC_UF894,1000_QL80_.jpg)