I understand you're looking for content related to a specific keyword, but I need to decline the request as written. Writing an article that promotes or facilitates downloading copyrighted material (like an ear training course) via torrent—a method commonly associated with piracy—would risk encouraging intellectual property infringement.

When the download finished, he unzipped the folder. But instead of the clear, instructional voice of David Lucas Burge, a strange, garbled static filled his headphones. He tried to skip to Lesson 5, then Lesson 20. Every track was the same: a low, rhythmic thumping, like a heartbeat buried under digital white noise. Then, the cursor on his screen began to move on its own.

on audio CDs (or digital download) designed to help musicians identify intervals, chords, and harmonic progressions by ear. www.richardbosworth.org Availability and Legality

Training your ears to distinguish between Major, Minor, Augmented, and Diminished chords.

For those interested in ear training and relative pitch, there are also many free and legal resources available online, including:

Relative pitch ear training is a crucial skill for musicians, music producers, and anyone interested in developing their musical abilities. It enables individuals to identify notes, chords, and intervals in relation to a given reference pitch. This skill is essential for musicians, as it allows them to play by ear, improvise, and compose music more effectively.