Analogue-sequencer

> > 1. When defining a synth (name, midi port and channel), can 
> bank select and program change command be also specified? If 
> not, how one can memorise this, so that next time the song is 
> loaded, all midi gear change patches accordingly. 

You can add bank and program select track values, which are defined at the
instrument level.
These can be manually adjusted for each track, then saved at the song or
scene level.

> Also, what 
> about multitimbral synths, how those are defined in Cirklon?

An instrument defined as multi-timbral gets an extra field on the TRACK page
to select its MIDI channel.
A single instrument can then be used on different channels on multiple
tracks.

> > 2. Can USB midi and standard midi ports co-exist? I mean 
> can Cirklon sequence both VI synths in DAW via USB and 
> hardware synths via MIDI ports simultaneously?

Yes.
 
> > 3. When recording chords (melody), what happens if the 
> pattern length is too short, is it automatically extended or 
> the recording stops or what?

You can set a CK pattern not to loop, so in effect it has an infinite
length.
For editing, the bar position is limited to 999 bars.

> In linear sequencer on my 
> computer I like to improvise sometimes - I just press record 
> and play as long as I like, without thinking about pattern 
> length or anything like that. How is Cirklon regarding this?

You can do that.

> > 4. Last, but not least: any hope for piano roll editing 
> mode? I understand that there is grid mode for drums, but no 
> piano roll yet?

I've done some work on how a piano roll might look, but haven't got it to
where I want it yet.
It'll be along some time in the new year.

Cheers,
Colin