diff --git a/batdetect2/train/evaluate.py b/batdetect2/evaluate/evaluate.py
similarity index 100%
rename from batdetect2/train/evaluate.py
rename to batdetect2/evaluate/evaluate.py
diff --git a/batdetect2/evaluate/evaluate_models.py b/batdetect2/evaluate/legacy/evaluate_models.py
similarity index 99%
rename from batdetect2/evaluate/evaluate_models.py
rename to batdetect2/evaluate/legacy/evaluate_models.py
index 602faa8..88cab61 100644
--- a/batdetect2/evaluate/evaluate_models.py
+++ b/batdetect2/evaluate/legacy/evaluate_models.py
@@ -12,8 +12,8 @@ import pandas as pd
 import torch
 from sklearn.ensemble import RandomForestClassifier
 
-import batdetect2.train.evaluate as evl
-import batdetect2.train.train_utils as tu
+import batdetect2.evaluate.legacy.evaluate_models as evl
+import batdetect2.train.legacy.train_utils as tu
 import batdetect2.utils.detector_utils as du
 import batdetect2.utils.plot_utils as pu
 from batdetect2.detector import parameters
diff --git a/batdetect2/evaluate/readme.md b/batdetect2/evaluate/legacy/readme.md
similarity index 100%
rename from batdetect2/evaluate/readme.md
rename to batdetect2/evaluate/legacy/readme.md
diff --git a/batdetect2/finetune/finetune_model.py b/batdetect2/finetune/finetune_model.py
index 4c2d1c2..3135d78 100644
--- a/batdetect2/finetune/finetune_model.py
+++ b/batdetect2/finetune/finetune_model.py
@@ -8,10 +8,10 @@ import torch.utils.data
 from torch.optim.lr_scheduler import CosineAnnealingLR
 
 import batdetect2.detector.parameters as parameters
-import batdetect2.train.audio_dataloader as adl
+import batdetect2.train.legacy.audio_dataloader as adl
+import batdetect2.train.legacy.train_model as tm
+import batdetect2.train.legacy.train_utils as tu
 import batdetect2.train.losses as losses
-import batdetect2.train.train_model as tm
-import batdetect2.train.train_utils as tu
 import batdetect2.utils.detector_utils as du
 import batdetect2.utils.plot_utils as pu
 from batdetect2 import types
diff --git a/batdetect2/train/readme.md b/batdetect2/train/legacy/readme.md
similarity index 100%
rename from batdetect2/train/readme.md
rename to batdetect2/train/legacy/readme.md
diff --git a/batdetect2/train/legacy/train.py b/batdetect2/train/legacy/train.py
new file mode 100644
index 0000000..a59b13a
--- /dev/null
+++ b/batdetect2/train/legacy/train.py
@@ -0,0 +1,82 @@
+from typing import Callable, NamedTuple, Optional
+
+import torch
+from soundevent import data
+from torch.optim import Adam
+from torch.optim.lr_scheduler import CosineAnnealingLR
+from torch.utils.data import DataLoader
+
+from batdetect2.models.typing import DetectionModel
+from batdetect2.train.dataset import LabeledDataset
+
+
+class TrainInputs(NamedTuple):
+    spec: torch.Tensor
+    detection_heatmap: torch.Tensor
+    class_heatmap: torch.Tensor
+    size_heatmap: torch.Tensor
+
+
+def train_loop(
+    model: DetectionModel,
+    train_dataset: LabeledDataset[TrainInputs],
+    validation_dataset: LabeledDataset[TrainInputs],
+    device: Optional[torch.device] = None,
+    num_epochs: int = 100,
+    learning_rate: float = 1e-4,
+):
+    train_loader = DataLoader(train_dataset, batch_size=32, shuffle=True)
+    validation_loader = DataLoader(validation_dataset, batch_size=32)
+
+    model.to(device)
+
+    optimizer = Adam(model.parameters(), lr=learning_rate)
+    scheduler = CosineAnnealingLR(
+        optimizer,
+        num_epochs * len(train_loader),
+    )
+
+    for epoch in range(num_epochs):
+        train_loss = train_single_epoch(
+            model,
+            train_loader,
+            optimizer,
+            device,
+            scheduler,
+        )
+
+
+def train_single_epoch(
+    model: DetectionModel,
+    train_loader: DataLoader,
+    optimizer: Adam,
+    device: torch.device,
+    scheduler: CosineAnnealingLR,
+):
+    model.train()
+    train_loss = tu.AverageMeter()
+
+    for batch in train_loader:
+        optimizer.zero_grad()
+
+        spec = batch.spec.to(device)
+        detection_heatmap = batch.detection_heatmap.to(device)
+        class_heatmap = batch.class_heatmap.to(device)
+        size_heatmap = batch.size_heatmap.to(device)
+
+        outputs = model(spec)
+
+        loss = loss_fun(
+            outputs,
+            gt_det,
+            gt_size,
+            gt_class,
+            det_criterion,
+            params,
+            class_inv_freq,
+        )
+
+        train_loss.update(loss.item(), data.shape[0])
+        loss.backward()
+        optimizer.step()
+        scheduler.step()
diff --git a/batdetect2/train/train_model.py b/batdetect2/train/legacy/train_model.py
similarity index 100%
rename from batdetect2/train/train_model.py
rename to batdetect2/train/legacy/train_model.py
diff --git a/batdetect2/train/train_split.py b/batdetect2/train/legacy/train_split.py
similarity index 100%
rename from batdetect2/train/train_split.py
rename to batdetect2/train/legacy/train_split.py
diff --git a/batdetect2/train/train_utils.py b/batdetect2/train/legacy/train_utils.py
similarity index 100%
rename from batdetect2/train/train_utils.py
rename to batdetect2/train/legacy/train_utils.py