Instrument was played by former Beatle the night he died
The former Beatle's instrument is on peace mission
Lawyers contend she has not authorised viewing
Michael Brecker played with John Lennon and James Brown
Judge orders that government surveillance documents be made public
Driver arrested after allegations are made in New York
Widow Yoko Ono makes calls on fans
New owner George Michael takes it to Dallas
Mark Chapman remains behind bars for another two years
Yoko Ono honours those who strive for peace