Let me see if I can do a better job at explaining my problem ...

The program's Notation Preferences for the Transpose field is set to Trumpet (+2).

My sheet music is written for Trumpet (a B-flat instrument). At least that's what it says at the top of my sheet (the text reads Trumpet). For this given song that I'm using as an example, the paper sheet music shows me the song is in the key of-C. Outside of BIAB when I play along, my sheet music follows the MP3 playback intonation just fine (if I play a middle-C off from the original sheet music with my trumpet, the MP3's middle-C sounds the same).

Okay, I pull the MP3 into Audio Chord Wizard and it automatically sets the key to-C (I didn't have to do anything). When I move it to BIAB it shows me it's in the key of-C (the field to set the song's key shows this), however although the chords appear to be correct, the notation shows that I'm playing the key of-D.

The problem is that my sheet music (outside of BIAB) shows the key of-C (there, I would have no sharps or flats). The notation inside BIAB shows the key of-D (there, I would have F# and C#).

And yes, when I listen to a MIDI note-C on the staff played back by BIAB it's tone matches my trumpet's C. I'm not having a problem understanding that issue. What I'm having a problem with is that when I print my solo sheet out of BIAB, it doesn't match the key of the play along sheet music (which shows the key of-C). I'm in a different key depending on which one I use to play with (the original paper music in key-C, or the BIAB-produced solo in key-D, although the solo played over the MP3 sounds like the right key).

I don't feel like I'm getting what's happening although I'm trying hard to understand. I desperately need to understand before I can go any further and I appreciate all who can help me understand.

Thanks again.

Ike