diff --git a/src/python/piper_train/clean_cached_audio.py b/src/python/piper_train/clean_cached_audio.py
index 97959ea..5e30295 100644
--- a/src/python/piper_train/clean_cached_audio.py
+++ b/src/python/piper_train/clean_cached_audio.py
@@ -1,9 +1,13 @@
 #!/usr/bin/env python3
 import argparse
+from concurrent.futures import ThreadPoolExecutor
+import logging
 from pathlib import Path
 
 import torch
 
+_LOGGER = logging.getLogger()
+
 
 def main() -> None:
     parser = argparse.ArgumentParser()
@@ -15,19 +19,30 @@ def main() -> None:
     parser.add_argument(
         "--delete", action="store_true", help="Delete files that fail to load"
     )
+    parser.add_argument("--debug", action="store_true")
     args = parser.parse_args()
+    logging.basicConfig(level=logging.DEBUG if args.debug else logging.INFO)
+    _LOGGER.debug(args)
 
     cache_dir = Path(args.cache_dir)
     num_deleted = 0
-    for pt_path in cache_dir.glob("*.pt"):
+
+    def check_file(pt_path: Path) -> None:
+        nonlocal num_deleted
+
         try:
+            _LOGGER.debug("Checking %s", pt_path)
             torch.load(str(pt_path))
         except Exception:
-            print(pt_path)
+            _LOGGER.error(pt_path)
             if args.delete:
                 pt_path.unlink()
                 num_deleted += 1
 
+    with ThreadPoolExecutor() as executor:
+        for pt_path in cache_dir.glob("*.pt"):
+            executor.submit(check_file, pt_path)
+
     print("Deleted:", num_deleted, "file(s)")