Bob Dennis cut his first master in October 1993 on his 18th birthday.  The Michigan pressing plant that Motown Records used needed a replacement master for "Fingertips" by Stevie Wonder, the artist's first million seller. The plant had pressed all of the records that could be pressed with the twelve previous masters that had been supplied by Motown's mastering department.  It was Bob's first day on the job.

The following year Bob would cut the original masters for many gold records including "Where Did our Love Go?" (Supremes), My Guy (Mary Wells), "The Way You Do The Things You Do" (Temptations) just to name a few.  By time Bob left his job as mastering supervisor 5 years later, he had cut the original masters on over 25 gold records.  When Bob Left he was in charge of maintaining the loudness and clarity of the Motown sound.  All mixes had to be approved by him before release. 

Bob and the technical staff of Motown were innovators.  Technical advances, such as half-speed mastering were implemented years before "top" mastering engineers were using techniques like this.  Special filters were built to make the low-end of the masters loud and present.  The company (Motown) thrived on the quality of mastering and became the top national hit factory of the mid 60's.  The company's success formula was good songs, good production, good performances, good recording, good mixing and good mastering.  The company felt that good mastering was an important part of the process, and Bob was in charge of that last step.

For the next decade Bob mastered professionally and managed to get mastering credit on another 10 or so gold and platinum records in addition to other activities in the area of production, recording, mixing and songwriting.  After ceasing to do mastering for hire, Bob kept mastering on his own recordings and productions, thus is totally familiar with how to make mixes in all formats sound the best.