| Siegmund-Sieglinde number | 25 |
| Piece for two | 13 |
| Music for two | 13 |
| Four-hand piano piece | 21 |
| Composition for two | 19 |
| "Say Say Say," say | 28 |
| Trio minus one | 14 |
| Song for Simon and Garfunkel, e.g. | 34 |
| Recital offering | 16 |
| Operatic love scene | 19 |
| Musical pair | 12 |
| Music piece | 11 |
| "I Got You Babe," e.g. | 32 |
| ''Up Where We Belong,'' for one | 47 |
| You can't do it alone | 25 |
| Two-star performance? | 21 |
| Tune two croon | 14 |
| The Smothers Brothers, for one | 30 |
| The Carpenters, e.g. | 20 |
| Piece marked "one piano, four hands" | 46 |
| Performance that takes a second? | 32 |
| Peaches & Herb, e.g. | 24 |
| Pair's air | 14 |
| Operatic love scene, usually | 28 |
| Musical composition for two | 27 |
| Love song, often | 16 |
| It can't be done alone | 26 |
| Four-handed piano tune | 22 |
| First-act finale in "La Bohème" | 44 |
| Carpenters' work? | 21 |
| "You Don't Bring Me Flowers," e.g. | 48 |
| "Up Where We Belong," for one | 39 |
| "Say, Say, Say" say | 29 |
| "Say, Say, Say," say | 30 |
| "Happy Trails," e.g. | 30 |
| Work that can't be done alone | 33 |
| Work for piano and violin | 25 |
| What a couple of people can play | 32 |
| Voices in harmony | 17 |
| Vocal composition | 17 |
| Verdi's "Un di felice," for one | 45 |
| Verdi's "Fu la sorte dell' armi," e.g. | 56 |
| Two-player activity | 19 |
| Two piece? | 10 |
| Tune for four hands | 19 |
| Tune for two | 13 |
| The Human League's "Don't You Want Me," e.g. | 62 |
| Sonny and Cher song, e.g. | 25 |
| Song sung by two | 16 |
| Song for the Everly Brothers | 28 |
| Song for a pair | 15 |
| Something one singer can never do | 33 |
| Something one can never do? | 27 |
| Something one can never do | 26 |
| Solo plus one | 13 |
| Shared air | 10 |
| Righteous Brothers hit, e.g. | 28 |
| Puccini's "O Mimi, tu più non torni" e.g. | 58 |
| Puccini's "Flower ___" | 36 |
| Piece that can't be performed alone | 39 |
| Piece played by a pair | 22 |
| Piece marked "piano, four hands," obviously | 53 |
| Piano-violin piece | 18 |
| Piano piece with "primo" and "secondo" parts, e.g. | 70 |
| Piano music for four hands | 26 |
| Performance that takes a second | 31 |
| Performance by Steve and Eydie | 30 |
| Pair of performers | 18 |
| Operatic twosome | 16 |
| Operatic love song | 18 |
| One can't do this | 21 |
| Offenbach's "Belle nuit, ô nuit d'amour," e.g. | 67 |
| Number with two | 15 |
| Number for two | 14 |
| Number divided by two? | 22 |
| Number by Davis and McCoo | 25 |
| Musical piece for two | 21 |
| Mimi-Rodolfo number | 19 |
| MacDonald-Eddy specialty | 24 |
| MacDonald-Eddy offering | 23 |
| Love song, at times | 19 |
| It may call for four hands | 26 |
| Irving Berlin's "You're Just in Love," e.g. | 61 |
| Indigo Girls song, e.g. | 23 |
| Harmonized number | 17 |
| Four-handed exercise | 20 |
| Four-hand piano work | 20 |
| Everly Brothers performance | 27 |
| Everly Brothers offering | 24 |
| Eddy-MacDonald number | 21 |
| Donizetti's "Tornami a dir che m'ami," e.g. | 61 |
| Composition for two voices | 26 |
| Collaborative work | 18 |
| Certain recital piece | 21 |
| Any Sonny and Cher song | 23 |
| A two-piece? | 12 |
| A tuneful twosome | 17 |
| 1982's "Ebony and Ivory," e.g. | 44 |
| 1967 #1 hit "Somethin' Stupid," e.g. | 50 |
| 1965's "I Got You Babe," e.g. | 43 |