diff --git a/app/core/database.py b/app/core/database.py
index 0b3fa1d..0a85ffe 100644
--- a/app/core/database.py
+++ b/app/core/database.py
@@ -6,6 +6,7 @@ from sqlmodel.ext.asyncio.session import AsyncSession
 
 from app.core.config import settings
 from app.core.logging import get_logger
+from app.core.seeds import seed_all_data
 from app.models import (  # noqa: F401
     plan,
     playlist,
@@ -45,6 +46,19 @@ async def init_db() -> None:
         async with engine.begin() as conn:
             await conn.run_sync(SQLModel.metadata.create_all)
         logger.info("Database tables created successfully")
+
+        # Seed initial data
+        await seed_initial_data()
+
     except Exception:
         logger.exception("Failed to initialize database")
         raise
+
+
+async def seed_initial_data() -> None:
+    """Seed initial data into the database."""
+    logger = get_logger(__name__)
+    logger.info("Starting initial data seeding")
+
+    async with AsyncSession(engine) as session:
+        await seed_all_data(session)
diff --git a/app/core/seeds.py b/app/core/seeds.py
new file mode 100644
index 0000000..8a9f05d
--- /dev/null
+++ b/app/core/seeds.py
@@ -0,0 +1,65 @@
+"""Database seeding functionality."""
+
+from sqlmodel import select
+from sqlmodel.ext.asyncio.session import AsyncSession
+
+from app.core.logging import get_logger
+from app.models.plan import Plan
+
+logger = get_logger(__name__)
+
+
+async def seed_plans(session: AsyncSession) -> None:
+    """Seed initial plan data."""
+    logger.info("Seeding plan data")
+
+    # Check if plans already exist
+    existing_plans = await session.exec(select(Plan))
+    if existing_plans.first():
+        logger.info("Plans already exist, skipping seeding")
+        return
+
+    # Define initial plans
+    initial_plans = [
+        Plan(
+            code="free",
+            name="Free Plan",
+            description="Basic free plan with limited features",
+            credits=25,
+            max_credits=75,
+        ),
+        Plan(
+            code="premium",
+            name="Premium Plan",
+            description="Premium plan with more features",
+            credits=50,
+            max_credits=150,
+        ),
+        Plan(
+            code="pro",
+            name="Pro Plan",
+            description="Pro plan with unlimited features",
+            credits=100,
+            max_credits=300,
+        ),
+    ]
+
+    # Add plans to session
+    for plan in initial_plans:
+        session.add(plan)
+
+    await session.commit()
+    logger.info("Successfully seeded %d plans", len(initial_plans))
+
+
+async def seed_all_data(session: AsyncSession) -> None:
+    """Seed all initial data."""
+    logger.info("Starting data seeding")
+
+    try:
+        await seed_plans(session)
+        logger.info("Data seeding completed successfully")
+    except Exception:
+        logger.exception("Failed to seed data")
+        await session.rollback()
+        raise
diff --git a/app/models/sound.py b/app/models/sound.py
index 7db256f..aa2a9a6 100644
--- a/app/models/sound.py
+++ b/app/models/sound.py
@@ -6,6 +6,7 @@ from app.models.base import BaseModel
 
 if TYPE_CHECKING:
     from app.models.playlist_sound import PlaylistSound
+    from app.models.sound_played import SoundPlayed
     from app.models.stream import Stream
 
 
@@ -31,3 +32,4 @@ class Sound(BaseModel, table=True):
     # relationships
     playlist_sounds: list["PlaylistSound"] = Relationship(back_populates="sound")
     streams: list["Stream"] = Relationship(back_populates="sound")
+    play_history: list["SoundPlayed"] = Relationship(back_populates="sound")
diff --git a/app/models/user.py b/app/models/user.py
index 6bbb52e..d31570b 100644
--- a/app/models/user.py
+++ b/app/models/user.py
@@ -8,6 +8,8 @@ from app.models.base import BaseModel
 if TYPE_CHECKING:
     from app.models.plan import Plan
     from app.models.playlist import Playlist
+    from app.models.sound_played import SoundPlayed
+    from app.models.stream import Stream
     from app.models.user_oauth import UserOauth
 
 
@@ -29,3 +31,5 @@ class User(BaseModel, table=True):
     oauths: list["UserOauth"] = Relationship(back_populates="user")
     plan: "Plan" = Relationship(back_populates="users")
     playlists: list["Playlist"] = Relationship(back_populates="user")
+    sounds_played: list["SoundPlayed"] = Relationship(back_populates="user")
+    streams: list["Stream"] = Relationship(back_populates="user")