CREATE TABLE table_28715942_5 (original_artist VARCHAR, vocal_percussionist VARCHAR)

What is the original artist when the vocal percussionist is Alexei Kalveks?
SELECT original_artist FROM table_28715942_5 WHERE vocal_percussionist = "Alexei Kalveks"
SELECT "original_artist" FROM "table_28715942_5" WHERE "Alexei Kalveks" = "vocal_percussionist"