Complex sentence: In October 2006, they released their second album, "Little Universe", followed by a single in December- "My Future Is Not a Dream", a collaboration with A-pay, a band under the same label.
Split into simpler sentences: In October 2006, they released their second album, "Little Universe". That December, they released a single- "My Future Is Not a Dream", a collaboration with A-pay, a band under the same label.