CREATE TABLE table_11827596_4 (lyricist VARCHAR, film_name VARCHAR, co_singer VARCHAR)

Who was the lyricist for gopal krishna and co singer of solo?
SELECT lyricist FROM table_11827596_4 WHERE film_name = "Gopal Krishna" AND co_singer = "Solo"
SELECT "lyricist" FROM "table_11827596_4" WHERE "Gopal Krishna" = "film_name" AND "Solo" = "co_singer"