Which Atari 2600 games can you recall with background 'music' during gameplay?

[Emperor Megas]

I was just thinking about which games for the 2600 have constant music in the background as you play. Not just intro or event tunes, but actual repeating BGM. It's a stretch to include things like Space Invaders which really just have a sound effect relative to the aliens movement, but I'll accept those types of games so long as the sound is constant and rhythmic.

I'm sure that here are a lot; here are a few I can think of:

Demon Attack
Halloween
Smurf: Recue in Gargamel's Castle
Space Invaders
Strawberry Shortcake

[dchristie74]

gyruss

[buzz_n64]

Pitfall II

[treismac]

Pitfall II

Damn. I got nothing.

Wait!

Sneak Peak. There is a slight break from the bgm, but surely by 2600 standards it counts.

Skate Boardin' by Absolute.

Tapper.

Commando. The marching drum beat sounds like footsteps at first initially, but there is a repeating song.

Double Dragon. The music sounds better than the game plays.

Kung Fu Master.

Custer's Revenge. If you're counting Space Invaders, then this Native American "war chant" thing surely counts.

Bump n Jump.

Dig Dug- providing that you keep moving.

Burgertime(kinda). The bgm starts and stops and starts and stops and starts and stops you wish it would just stop.

[Jack7]

Sorcerer, an underated game with a soundtrack

[Choses]

Journey Escape.