Opus Four is Tim's fourth CD, released in 2013. The CD includes 13 tracks, including the 12 tracks released in 2012 as month-by-month singles.

Opus Four was nominated by SoloPiano.com for best Classical/Neo-Classical album of the year. In addition, two tracks from Opus Four were nominated for Hollywood Music in Media Awards:

• A Moment of Joy - for Best Contemporary Orchestral/Instrumental Song
• Adagio Sostenuto - for Classical Song

If you like this CD, you may want to check out the song book for it as well.