Engineer Derek Ali on recording To Pimp a Buterfly : "I use plug-ins on his vocals during recording, because it’s easier and quicker, and they tend to be the Waves Renaissance Compressor, Metaflanger, De-Esser, SSL Channel, S1 Imager and the [Avid] Air Chorus."

“MetaFlanger can add a lot of warmth and movement to pads. It’s the exact signature sound I'm looking for when browsing flangers, but often they miss the mark; MetaFlanger nails it. ”

Used for the backing vocals on "SexyBack", as stated by mix engineer Jimmy Douglass in this July 2007 Sound on Sound interview.

Backing vocals: MXR flanger, Digidesign Impact, Sound Toys Filter Freak, Celemony Melodyne, Waves Q10, Metaflanger and Renaissance Reverb, Pultec EQ

"The backing vocals are all Justin. I'd say it's about 12 tracks, three-part harmony. I'm sure I used the MXR flanger on this as well, and also the Impact plug-in, which is supposed to simulate the SSL board compressor. I wanted to really hit it hard, with an attack-y kind of sound that releases really quickly. I also used the Filter Freak plug-in, which is great, and Melodyne, Metaflanger, the Waves Q10 EQ, the Pultec EQP1A and the Rverb [Renaissance Reverb] plug-ins. Rverb is not a great reverb, but I like it, because it's low-grade. The weird backing vox effects are a combination of things, and I have no idea how I did what."

In a video by the Tape Notes Podcast, we see in the A. G. Cook session that the Waves MetaFlanger is use in one of the stems during the breakdown of his track "Lucifer" featuring Charli XCX and Addison Rae.

In the Waves EMP Toolbox Overview video on waves.com, Dave Clarke discusses his use of the Waves MetaFlanger plugin, highlighting its role in his music production.

Used for Ray's vocals on "Old Town Road (Remix)", as stated by mix engineer Andrew "VoxGod" Bolooki in this August 2019 Sound on Sound interview.

Billy Ray Cyrus' verse lead vocal provides an example of the mind-boggling complexity of Bolooki's vocal treatments. The audio is spread over five tracks (36-40), four of them with the same insert effects chain of Melodyne, FabFilter Pro-Q 3, FabFilter Pro-DS and Waves CLA-76. The fifth track replaces the Pro-DS with the Avid ModDelay 3, and adds a send to the 'rvb2' aux with the Soundtoys Effect Rack. All five audio tracks are routed to an aux group track (35), which has the Pro-Q 3, Waves C6 and RVox, UA Distressor and SSL Channel, plus a whopping seven sends to delay and reverb aux tracks, and another Distressor aux. The quarter- and eighth-note delay auxes themselves each have four insert plug-ins (Waves H-Delay, Pro-Q 3, MetaFlanger, and DVerb) and a send to the 'rvb1' reverb aux. That means that the verse vocal alone has a total of 38 plug-ins, spread over five audio tracks, one group aux track, and seven aux effects tracks!

Bolooki: "I spoke to a mixer a couple of years ago and asked him how he got things to sound so polished. And he said: 'You can't just throw on a plug-in, you have to take more control, and make sure you purposely put things in different places in different ways.' So, for example, in this song I added the DVerb to the delay auxes, to create a distant effect, so it's not obvious. There are many effects going on, but none of them are overpowering. They are all set back. Nothing gets in the way of the lyrics and the vocal performance. I could probably delete half these effects and it would have sounded the same, but people liked it the way it was, so I left them all.

"This was the first time I used the UAD Distressors and I ended up having two on Billy's vocals: one as part of his main vocal aux, and another set much more aggressively in a parallel and blended back into the same lead vocal aux. This made his vocals really kick ass, and helped make each word crystal-clear. I also ended up copying the Waves SSL strip from Nas' vocals on some of Billy's vocal tracks too, just for some tonal continuity. I have no problem stacking plug-ins on plug-ins. If it's better, it's better.

"Just to highlight some of the other plug-ins I used, there's an aux called 'VoxDoubler' with the Waves Greg Wells VoiceCentric. It definitely adds a bit more of a finished feel and works well mixed in parallel. I put the Waves C6 multiband compressor on almost every single vocal bus, using the 'Pooch Vocal' preset. This cleans up some of the mud. You can solo the side-chain bands and sweep around until you find the annoying frequency, and then just cut that out. If I need to play back something for someone really fast, this is my emergency plug-in to get it to sound better really quickly. Also, the Melodyne plug-in is greyed out, because I printed it. I also like using the Pro-DS, and always put it before the CL76 compressor, because I think it just makes the most sense to fix issues before you boost the whole track with a compressor."

During this masterclass Livestream, Juyen shares his screen adding a Metaflanger during 51:29.

In this article, Seth states "“Future’s intro vocal has the Waves MetaFlanger, for extra effect." He has used this plugin for vocals in the Intro of the track.