Yet poor Clarence was not an accompanyist to be coveted.    From Wordnik.com.  [Phoebe, Junior] Reference

With him as her accompanyist, she sang as she could not sing without his aid.    From Wordnik.com.  [Run to Earth A Novel] Reference

The music, and the audience, and the accompanyist all together were delightful to him.    From Wordnik.com.  [Phoebe, Junior] Reference

I've told her she simply must come to Ruan, and bring the best accompanyist she can find.    From Wordnik.com.  [The Glimpses of the Moon] Reference

Luigi Carlo Zanobe Salvadore Maria Cherubini was born at Florence on September 14, 1700, the son of a harpsichord accompanyist at the Pergola Theatre.    From Wordnik.com.  [The Great Italian and French Composers]

Being in comfortable circumstances, highly educated, handsome, attractive, with a mezzo-soprano voice of rare beauty and great skill as a piano-forte accompanyist, she had not only suitors who took her rejection without bitterness, but hosts of friends.    From Wordnik.com.  [Mrs. Warren's Daughter A Story of the Woman's Movement] Reference

As Fagin stepped softly in, the professional gentleman, running over the keys by way of prelude, occasioned a general cry of order for a song; which having subsided, a young lady proceeded to entertain the company with a ballad in four verses, between each of which the accompanyist played the melody all through, as loud as he could.    From Wordnik.com.  [Oliver Twist] Reference

As Fagin stepped softly in, the professional gentleman, running over the keys by way of prelude, occasioned a general cry of order for a song, which, having subsided, a young lady proceeded to entertain the company with a ballad in four verses, between each of which the accompanyist played the melody all through, as loud as he could.    From Wordnik.com.  [Oliver Twist] Reference

Fowler prefers "accompanyist" to.    From Wordnik.com.  [small dead animals] Reference