Ever used "cello" as a verb? Harry Williams did in the 1921 song "Mello Cello," originally performed by the “Bronson and Baldwin” husband-and-wife vaudeville act of Percy Bronson and Winnie Baldwin. Charles N. Daniels, better known under the pseudonym Neil Moret, wrote the music. “Mello Cello” was one of their last collaborations.
Only the cello can bring forth the narrator’s happy memories of a past love:
But Cello a mellow refrain / And dear, you are with me again.
The cello—sometimes mellow, sometimes not—also connects me to my own love, my cellist wife Christa, whose birthday it is today.
Mello Cello sweet and low. In the moonbeam’s mellow glow.
Sing and bring my love to me.
Mello Cello melody.