The Grammy Award for Best Pop Instrumental Performance was awarded between 1969 and 2011.
In 1969 it was awarded as Best Contemporary-Pop Performance, Instrumental
From 1970 to 1971 it was awarded as Best Contemporary Instrumental Performance
In 1972 it was awarded as Best Pop Instrumental Performance
In 1973 it was awarded as Best Pop Instrumental Performance by an Instrumental Performer
From 1974 to 1975 it was again awarded as Best Pop Instrumental Performance
From 1986 to 1989 it was awarded as Best Pop Instrumental Performance
Since 1990 it has again been awarded as Best Pop Instrumental Performance
The award was discontinued from 2011 in a major overhaul of Grammy categories. From Wikipedia