Pocket recorders, whether the new fancy ones that can do a nice stereo recording or the old tape ones, are great. 

Sure, maybe not "studio quality" sound, but as devices to catch a quick "snapshot" of an idea or moment, or as a learning tool?  They are great.

This recording?  Well, maybe not perfect sound quality. It has a certain charming ambiance, though.  Not so bad that it wasn't enjoyable to listen to.  I liked it, personally.  Nice playing, Oliver.

@BillyG: I used one of the little "microcassette" pocket recorders for years, for catching musical (or other) ideas quickly.  Little noisy, not great fidelity, but good enough to get a song idea down.

A few years ago, I upgraded to one of these..

qid=1408361080&sr=8-3&keywords=coby+media+player

Again, not great sound quality and def not great video recording quality.  But I can load it with vids of tutorials I've been working from, backing tracks, etc.  The only thing I consider a shortcoming to it (other than quality) is that it can't record audio alone.  It's record function is low-fi audio and video that is maybe as good as an old webcam.  But as an easy-to-use device that can run for a few hours off a USB charge and can connect to my computer, it has been worth far more than the about $25 I paid for it a few years back.  Also no tapes to buy or fumble around with. 

Before somebody says it, yeah.. I am aware that some people's cell phones can do all that now.  I am still a cell-phone "luddite" though, and avoid the pesky things.  LOL

But there certainly is a place for devices that are easy to use for making a quick impromptu recording anywhere, any time.  Sometimes by the time you get "better" gear set up and cable run and etc, you've lost the idea you had or really don't feel like recording any more.  You can always do it better later, if you want. 

Getting it down now with even a small pocket recorder avoids the problem of an idea being "lost in time.. like tears in the rain.."

And for just a quick "take" for your own learning purposes, audio and/or video that you can make easy and on the spot is a great tool.  You can get more of an idea of how well a piece/song is coming along, and maybe even some idea of if your delivery is developing well. 

Anyway, great stuff, Oliver!