Thank you ... but that is not exactly what I want to do as that would not let me make any pitch changes to loops recorded in different keys.

Let me ask again in a different way assuming I want to use MIDI and know my chord changes ... (and also assuming that the key/ tempo change markers only affect audio and not MIDI?)

I know that Acid can only raise or lower pitch and increase or decrease tempo ... it can't change a loop recorded in minor to major or vice versa.

So if I know the first chord changes in the song is from C to Am (diatonic change) and the project is set in C, when I place an acidized loop at the chord change to Am do I also put in a key/ tempo marker changing to A in order that loops recorded in different minor keys will play harmonically?

Thanks.

As you know, choosing a key signature is really more like choosing the root. A C major loop can be acidized and assigned a key of “C”. A C minor loop can be acidized and assigned a key of “C” also. There are a lot of tricks you can learn to have loops play as you wish, harmonically. Knowing the relative major or minor is very helpful, like you said. Loading in a loop and changing its pitch to none is sometimes helpful, as then it won’t pitch stretch at all or you can manually control its transposition. Just highlight the individual loop and press the plus or minus key to transpose up or down by half steps (Pro 7). Entire tracks can also be easily manually transposed.

Your chord progression is pretty much in the key of G major, except for the A add 9. So I would set the initial starting key to G. As you work on the tune you’ll find yourself sometimes setting the initial starting key to none for a bit. For example, if you wanted to audition a series of E minor loops you wouldn’t want them stretched while auditioning, or they will sound as G minor. When setting the initial key to none, you’ll have to manually transpose existing tracks. The more you create, the more it becomes second nature.

>So if I know the first chord changes in the song is from C to Am (diatonic change) and the project is set in C, when I place an acidized loop at the chord change to Am do I also put in a key/ tempo marker changing to A in order that loops recorded in different minor keys will play harmonically?<

Yes, that’s right. If the loops you are auditioning have a different root, like say G (minor), when Acid gets to the key change marker, the G minor loops will then be auditioned in A minor.

So it’s pretty much a dance of the points you wrote about. Using the relative major/minor, inserting key change markers or using key “none” for the song or for individual tracks/loops.

Thanks, mjn3. I think I've got it all sorted out now. Also I see why Maxtheschu said set project to 'none.'