The Two-Tone Tape series is a new concept from ACEBO. Each stereo T CD contains both source material for you to practice interpreting and a model interpretation of that same material by an expert interpreter. The source material is on the left channel of CD, and the interpretation is on the right channel. Thus, by using your stereo's balance control, you can hear only the source, only the interpretation, or both.If your stereo does not have a balance control, you can still use a Two-Tone Tape or CD, but you will need stereo headphones: Instead of turning the balance control to the left, you listen to only the left earphone; instead of turning the balance control to the right, you listen to only the right earphone, etc.

When you listen to the interpretation provided, not only are your terminology questions about the passage answered, you also gain valuable insights into the time lag, or décalage employed by an expert interpreter.

Volume 1 of the Two-Tone Tape series contains English source material, with a simultaneous interpretation into Spanish by Holly Mikkelson, a nationally and internationally recognized authority on court interpreting.

Volume 1 contains the following passages:

* Expert Witness Testimony, Criminalist (enzyme testing)
* Stolen-Vehicle Testimony
* Expert Witness Testimony, Firearms
* Witness Testimony, Armed Robbery
* Jury Instructions having to do with Arrest and Detention
* Prosecution Closing Statement, Murder
* Defense Opening Statement, Terrorist Bombing
* Prosecution Opening Statement, Burglary
* Jury Instructions having to do with Juror Conduct
* Jury Instructions having to do with Vehicular Manslaughter