For years I have been going on about the true importance of working with rms values in the music. This video is very good and only reinforces that big time. Even without the LCast loudness meter if you are working with rms values you are right in the very ball park. The difference is only 1dB or less when you are comparing rms and Loudness units anyway.
Notice how he is using Klanghelm VU meters (which I have recommended on many occasions) Notice too how it is set to -10 as the ref level. Yes the Loudness meter is excellent and of course gives you even more information about the loudness of a track over time etc which is very handy to know. But for someone who is already very versed in working with rms metering it is nothing that new either.
More people should get onto it. VU meters can tell you so much about setting incoming track levels, buss and final buss levels. Like I have always said without them you are shooting in the dark a bit and really the peak level meter is such a useless device and so many people rely on them yet they are not really telling you very much at all other than if you are peaking up into 0dB FS or not which is important of course but you need rms metering as well. Most DAW's are not set up for any form of accurate rms metering but it is easily rectified.
Another important reason why K System metering is so important as you need to decide on a ref level of some sort while you are working on a project all the way through and also for the final ref level in mastering. He chose a slightly weird ref level I think there. His VU's were showing 0 db Vu when the ref level was at -10. Which is pretty hot compared to the K system -12 ref level which is known as broadcast. You can work at a range of ref levels obviously.
I think if you want to create a very analog sounding mix in the digital environment start first by acting in a way as was done back then. All rms metering nice and even all the way in, thru and out. It goes a long way to becoming a nice smooth analog mix at the end of the day.
For those interested you can get the LCast meter here:
http://www.meterplugs.com/lcast It is quite expensive and I can see why. It would be a great mastering tool for those interested in professional mastering. But a great VU meter will not cost anywhere near that and can put you right in the ballpark for much less.
http://www.klanghelm.com/VUMT.html The ballistics of the Klanghelm meter can be adjusted to match a very expensive real VU (which I have) and it is very close.
BTW my system reports that test file correctly as -11.5 dB rms which means my system is set up and reading correctly. Be aware that Sonar reports rms readings incorrectly as -3dB lower than that with its own rms meters. Built in rms meters are not great anyway as they are indicating way too low on the scale. This is easily corrected by using a VU meter plugin such as the Klanghelm with its ref level set accordingly.