When was the song “Ade” released by Letta Mbulu?

The song Ade was released in 1968, on the album “Free Soul”.

Ade

Ade sabela ke oh Ade

Ade ndonile na Ade? (Ndonile)
Ade ndonile na Ade? (Ndonile)

Wathula tu, tu (Woh wathula)
Kutheni na? (Kutheni na?)
Wathula tu, tu (Woh wathula)
Kutheni na? (Kutheni na?)

Ade ndenzeni na Ade? (Ndonile)
Ade ndenzeni na Ade? (Ndonile)

Wathula sthandwa (Woh wathula)
Ndikonile na? (Ndikonile?)
Wathula sthandwa (Woh wathula)
Ndikonile na? (Ndikonile?)

Maye, oh maye, weh maye (Maye, maye)
Maye, oh maye, weh maye (Maye, maye)

Ade ngabe ndonile?
Ade ngabe ndonile?

Ade sabela oh Ade (Ndonile?)
Ade ngithi sabela oh Ade (Ndonile?)

Wathula tu, tu (Woh wathula)
Kutheni na? (Kutheni na?)
Wathula tu, tu (Woh wathula)
Kutheni na? (Kutheni na?)

Maye, oh maye, oh maye, oh maye (Maye, maye)
Ngithi maye, oh maye, weh maye, oh maye (Maye, maye)
Maye, oh maye, oh maye, oh maye