Let's Go!!

 is the fourth single by Party Rockets. It was released on April 9, 2014, and peaked at #15 on the Oricon single chart.

Type A CD

 * 1) Let's Go!!
 * 2) Suki Sugite Ikirunoga Tsurai yo (好きすぎて生きるのがツライよ)
 * 3) Let's Go!! (Instrumental)
 * 4) Suki Sugite Ikirunoga Tsurai yo (好きすぎて生きるのがツライよ) (Instrumental)

Type B CD

 * 1) Let's Go!!
 * 2) Dear Friend (ディアフレンド)
 * 3) Let's Go!! (Instrumental)
 * 4) Dear Friend (ディアフレンド) (Instrumental)

Type C CD

 * 1) Let's Go!!
 * 2) Nichijou Dreamer (日常ドリーマー)
 * 3) Let's Go!! (Instrumental)
 * 4) Nichijou Dreamer (日常ドリーマー) (Instrumental)