Black Eyed Peas - Boom Boom Pow Chords & Tabs

I don't think there's any guitars in this song mainly synth, but i tried to 
transcribe what i heard both vocals and rhythm. Chords are A5, F5 and D5. It is in drop-D.
_____________________________________________________________
Black Eyed Peas
The E.N.D.
Boom Boom Pow
_____________________________________________________________


Rhythm
e|-----------------------------------------------------------|
B|-----------------------------------------------------------|
G|-----------------------------------------------------------|
d|-7-7-7-7--7-7-7-7--7-7-7-7--7-7-7-7------------------------|
A|-7-7-7-7--7-7-7-7--7-7-7-7--7-7-7-7------------------------|
D|-7-7-7-7--7-7-7-7--7-7-7-7--7-7-7-7------------------------|
[ Tab from: https://www.guitartabs.cc/tabs/b/black_eyed_peas/boom_boom_pow_crd.html ]
e|-----------------------------------------------------------|
B|-----------------------------------------------------------|
G|-----------------------------------------------------------|
d|-3-3-3-3--3-3-3-3--0-0-0-0--0-0-0-0------------------------|
A|-3-3-3-3--3-3-3-3--0-0-0-0--0-0-0-0------------------------|  
D|-3-3-3-3--3-3-3-3--0-0-0-0--0-0-0-0------------------------|


Lead - Vocals in Chorus
e|-----------------------------------------------------------|
B|-----------------------------------------------------------|
G|-----------------------------------------------------------|
d|-----7-----7-----7-----7-----3-----3-----0-----0-----------|
A|-----------------------------------------------------------|
D|-7-7---7-7---7-7---7-7---3-3---3-3---3-3---3-3-------------|