Led Zeppelin - Fool In The Rain chords

Chord progression for basically the whole song
the chord switches are very fast. the difficulty is in moving fast enough.
fun to play with two people alternating chords.
standard tuning. eadgbe


[ Tab from: http://www.guitaretab.com/l/led-zeppelin/318055.html ]
C - Dm  -  Em  -  F  -  Am  -  G

d    d     d      u     d      u-(strummy strummy)

bridge

(C  Dm   Em)only once then   C   F     C    F     C    F 
listen to the strum pattern here