It's played on the piano with a C note as root two times as one/fourth (1/4) note and after that D major one/second (1/2) for three times and two times after as one/eighth (1/8): e|---------------------------| B|---------------------------| G|-------7----7----7----7-7--| D|-------7----7----7----7-7--| A|-3--3--5----5----5----5-5--| E|---------------------------|