Sorry, guys, but I have never had a DVD to learn from about any of this stuff. Somehow, I haven't turned it into an excuse not to try, and to not teach myself.
Sure, the first few times aren't going to produce much of any quality. Remember piano lessons (if you took them)? You didn't sound that good back then either. But it got better didn't it?
There are a plethora of resources on the web, and plenty of books on how to use MIDI sequencers. Manufacturer websites, third party instruction, software forums, you name it. How much time do you spend at them? Expecting the manufacturers to spoon feed it to you is unrealistic. This is YOUR job, not theirs.
How many of you are so computer phobic, you don't even HAVE a MIDI sequencer? Or a computer based DAW..? From all the enthusiasm that greets utterly lame on board keyboard versions of these, I would say a lot... And yet, here you are, posting on the WWW, on a forum, getting your email, doing your taxes, downloading stuff from YouTube, the iTunes store, whatever...
Put that determination into learning a decent sequencer, RTFM (most of you wouldn't even NEED a DVD if you just did this AS YOU ARE TRYING THINGS OUT), and the whole concept of editing your arranger's MIDI output to get rid of the bloody repetitiveness of it would be a snap.
But refusing to even try because your arranger manufacturer doesn't make a DVD (that you will outgrow in a week) smacks of defeatism.
JUST DO IT! ?
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An arranger is just a tool. What matters is what you build with it..!