CREATE TABLE table_55597 ("Year" FLOAT, "Network" TEXT, "Play-by-play" TEXT, "Color commentator ( s ) " TEXT, "Ice level reporters" TEXT)

Who did the play-by-play before 1992 with the Ice level reporter Mike Emrick?
SELECT "Play-by-play" FROM table_55597 WHERE "Year" < '1992' AND "Ice level reporters" = 'mike emrick'
SELECT "Play-by-play" FROM "table_55597" WHERE "Ice level reporters" = 'mike emrick' AND "Year" < '1992'