Now that I'm retired, (and only take the very occasional high paying gig) the amount of time spent per day depends on the degree of motivation I'm feeling.
In spite of attempting to further cultivate the art of laziness (and it is an art) usually I've got a bit of a rough plan regarding what I'm doing music-wise that day or week.
Sometimes it's a spontaneous thing...I may be trying to find a particular type of style for an arrangement, and that may lead me on a style editing adventure for several hours, winding up with a bunch of new styles.
Or, I may hear a song I've never played and want to learn it, so that entails working around with styles, ascertaining the song structure itself, and what soloists I want to feature.
When I start my day, usually around 11:00 AM, I switch on the Tyros4 and my speaker system, and it stays on until I retire for the night. After about 10:00 PM I use a set of headphones, and I'm usually playing well past midnight.
With the keyboard continually on, and in the same room as my PC, I can sit down and play whenever the mood strikes me.
The studio time, because it is not here in my home, varies with projects on the go...I usually just go in and lay down either bed tracks with the Tyros4 (bass and drums) or overdub some other keyboard parts.
I only do mix-downs on my own home recorded stuff, so I'm not in the studio for very long.
I jam once or twice a month (sometimes more in the winter) with several other musicians, whom I regard as better players than myself, so I'm always learning and always pushing harder...and, I get to play a beautiful vintage Hammond B-3.
Music is still a large part of my life, in spite of retirement...before I went pro, I always played for my own enjoyment first, so I don't really need an audience, although it is very nice when there is one.
Also, I still do occasional private arranger clinics, but mainly in my own area.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.