http://www.animelyrics.com/anime/poc...aharariree.htm

First of all, the title should be "Pokemon Harahara Riree" rather than just "Harahara Riree".
The lyrics on the site currently are only the TV size version, so here's a complete romanization:

Pokemon harahara riree!

Gokigen naname no pichuu minna harahara
Gokigen naname no pichuu totemo shinpai

Nani ga attaka shiranai keredo
Komatta monda no dai mondai!

Pichuu ga okoridasu to denki biribiri nagaredasu
Denki biribiri nagaredasu to soba ni ita Nyaasu ga shibirechau
Soba ni ita Nyaasu ga shibirechau to gaikotsu ma~rumie

Gaikotsu ma~rumie da to Karakara ga nakama to machigaeru
Karakara ga nakama to machigaeru to hone wo futte aizu suru
Hone wo futte aizu suru to Mariru ga omowazu utai dasu

Mariru ga omowazu utai dasu to tanoshii rizumu ga umareru
Tanoshii rizumu ga umareru to Kireihana ga odoridasu
Kireihana ga odoridaseba (Kireihana ga odoridaseba?)
Pichuu no gokigen hai motodoori!

Imanimo nakiso na Togepii minna harahara
Imanimo nakiso na Togepii totemo shinpai

Nani ga attaka kondo mo shiranai keredo
Komatta monda no dai mondai tsu!

Togepii ga naki dasu to namida de chiisa na umi ga dekiru
Namida de chiisa na umi ga dekiru to Gyaradosu yorokobi oyogi mawaru
Gyaradosu yorokobi oyogi mawaru to ooki na nami ga zazazazazabun

Ooki na nami ga zazazazazabun da to Pikachuu naminori kurukuru taan
Pikachuu naminori kurukuru taan suruto miteita minna ga dai hakushu
Miteita minna ga dai hakushu suru to Kodakku kanchigai shite omowazu utai dasu

Kodakku omowazu utai dasu to toboketa rizumu ga umareru
Toboketa rizumu ga umareru to Yadokingu ga odori dasu
Yadokingu ga odoridaseba (Yadokingu ga odoridaseba?)
Togepii no nakigao hora waraigao!

Pichuu ga tanoshiku utai dasu to minna ga tanoshiku odori dasu
Minna ga tanoshiku odori dasu to oyatsu no jikan wo wasurechau
Oyatsu no jikan wo wasurechau to (Oyatsu no jikan wo wasurechau to?)
Pichuu no gokigen ara mata naname?

Jan!