There is limited widely documented information about an artist or band specifically named "K2_sp." If this refers to K2, the Serbian sibling pop duo formed by sisters Aleksandra and Kristina Kovač, they originated in the former Yugoslavia, blended pop and R&B influences, and were active primarily in the 1990s and early 2000s; their music combined melodic pop songwriting with vocal harmonies and contemporary production. If "K2_sp" denotes a different or more recent project, reliable public details are not broadly available, and only the above general facts about the known act K2 can be stated with confidence.