Conversation so far:
who wrote i need you by the beatles
I Need You by the Beatles was written by George Harrison.
when was the song i need you by the beatles recorded
I Need You was recorded on 15 and 16 February 1965. This was the first recording session for the group in 1965.
what key was the song i need you by the beatles composed in
I Need You is in A major (actually a little less than half a semitone below A, as were Ticket to Ride and Another Girl, also recorded that day).

Question: how long is the song
Self-contained rewrite: how long is the song i need you by the beatles