This Instrumental is from the Original Soundtrack of Ultraman Gaia.
Lyrics in the description below, hope you guys enjoy~
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Name: Beat On Dream On
Series: Ultraman Gaia ウルトラマンガイア
Type: 2nd Ending Song
Singer: Tomohiko Kikuta

Lyrics:
Machigai ja nai
Kimi ga shinjiteta koto
Bokura wa zutto onaji mono wo
Sagashiteta no sa

Nano ni betsu na kidō no
Wakusei mitai dane
Futari hikisaka rete

Kono sora to inochi ga afureru daichi
Wakeai tai yo

Dakara Beat On! Itsuka futari ga
Beat On! Hitotsu ni naru hi
Hoshi wa kagayaku

Itsumo Dream On! Kanashimi no wake
Dream On! Tatakai no imi
Kimi to mitsukeyō

Machigai ja nai
Kimi ga eranda koto,
Dakara kōkai nado shinai de
Akiramenaide

Onaji yume miteta noni
Mawarimichi bakari de
Futari surechigatta

Kono sora de ichiban utsukushi hoshi wo
Mamoru tame dane

Dakara Beat On! Kimi Ga itakara
Beat On! Tsuyoku naretato
Yatto wakatta

Itsumo Dream On! Kodoku na kyō wo
Dream On! Hashiri nuketara
Kimi ni aitai

Kono sora to inochi ga afureru daichi
Wakeai tai yo

Dakara Beat On! Itsuka futari ga
Beat On! Hitotsu ni naru hi
Hoshi wa kagayaku

Itsumo Dream On! Kanashimi no wake
Dream On! Tatakai no imi
Kimi to mitsukeō