programs VS drum programs?

Hi everybody,
Do actual 'program change numbers' supercede drum programs (1-4)?

Im having a little bit of trouble implementing program changes from one song to another. And trouble visualizing what i have to do.

Thanks,
Gil

part two question -

what is the relationship between the drum programs (1-4) and the 'regular' programs(1-128)?

they seem to mess with eachother.

please help!

Each track in a sequence can get assigned DRUM1-4. Thinks of it as a memory location.

Each program gets a midi program change number (1-127). Program numbers should be unique for each of the 24 programs loaded in memory, so you usually manually assign them. The number is stored within the PGM file itself.

In each sequence, you can use the Program: field to place a program in the DRUMx memory displayed on the screen from one of the 24 programs in memory. The number here correlates to the program change number for that program.

It is not necessary to specify a program change for every track that shares the same DRUMx number. A program change to change a single DRUMx only needs to occur once.

It is possible to change a program within a single DRUMx memory location multiple times anywhere in a single sequence. This can be done by inserting a PC in step edit.

Example:
We have two programs loaded in memory:
Fatset and it has PC = 1
SkinnySet and it has PC = 2
Track 1 of Seq 1 has DRUM1.
Program : 2
Therefore: Every track that has DRUM1 in that sequence will play SkinnySet.

Let's say you added:
Track 2 of Seq 1
DRUM2
Program: 1
Therefore: every track i that Seq that has DRUM2 will play FatSet.

Now you add:
Track 1 of Seq 2
DRUM1
Program: 1
Therefore: when you change from Seq 1 to Seg 2, Fatset get loaded into DRUM1 replacing Skinny set that was there (you still have Fatset in DRUM2, but that does not matter).

Lets say halfway through Seq2 you go into step edit and place a program change = 2 in track 1.
Since track 1 is assigned DRUM1, skinny set goes back into DRUM1.

This is quite a concept and can get pretty hard to bend your mind around it since this is an uncommon implementation. The only other gear that I can think of htat anyting close to this is the Waldorf Q kybd and it's 4 temp storage locations.

The MPC1000 is much simpler. You can assign any of the 24 programs to any track and that track will play that program independant of the other tracks. And you can use all 24 programs in the same sequence.