VANCOUVER (CP) - A former Canadian rock star testified yesterday that a man suing singer Sarah McLachlan was adequately compensated for his work on her 1988 debut album Touch.

Bill Henderson, former leader of rock bands Chilliwack and The Collectors, was accepted by the judge as a music expert.

He used a graph to depict the elements of songwriting - lyrics, melody, chords, bridge, verse, and chorus.

Using the graph, he calculated Neudorf wrote 16.8 per cent of the song Vox, 9.4 per cent of Steaming, and 20.8 per cent of Sad Clown.

Neudorf, 34, a former drummer and songwriter with the Vancouver band 54-40, claims he co-wrote four songs - Vox, Steaming, Strange World, and Sad Clown - on McLachlan's debut album. He also claims he co-produced Touch with Greg Reely.

He is seeking damages for unpaid royalties, claiming McLach-lan and her Vancouver record company, Nettwerk, her manager Terry McBride, and business partners Mark Jowett and Ric Arboit have been unjustly enriched by Neudorf's work, which helped launch McLachlan into international stardom.

"It's obvious Neudorf wasn't peripherally involved in this project," Henderson, 53, told B.C. Supreme Court Justice Bruce Cohen, who is hearing the civil case without a jury.

But Henderson, who has written 300 songs and is the former president of the Society of Composers Authors and Music Publishers of Canada (SOCAN), which administers song royalties, said Neudorf's main role working with McLachlan was as an arranger and producer.

Henderson, also a record producer, noted producers often add parts of songs to make a better recording and don't expect to get paid for songwriting because they are paid in "points."

Neudorf was paid one point - one percentage of retail sales - plus $3,385 in wages for his work on Touch, which Henderson concluded was adequate compensation and more than Neudorf would have received from songwriting royalties.

Neudorf's lawyer, Jonathan Simkin, tried to have Henderson's report ruled inadmissible because Henderson's daughter, Camille, is a backup singer for McLachlan and receives money from Nettwerk, so the report should be considered biased.