In a musical style that defies easy definition, Lee Ritenour and Dave Grusin have collaborated on multiple critically acclaimed albums, including On The Line (1983), Harlequin (1985), Two Worlds (1999), and Amparo (2008). They have worked together on several other projects including Lee's autobiographical 2005 release Overtime. They combine smooth jazz and classical intrumentation to produce a modern fusion style. Lee (born 1952) is a Grammy Award-winning guitarist, composer, and producer. Dave (born 1934) is an Grammy- and Academy Award-winning American composer, arranger, and pianist.