The long rehearsal
Forty preview performances and up. Merlin, Legs Diamond, The Capeman, Spider-Man. The preview period is where a musical is rewritten, and a very long one is a public record of panic.
40 in the catalogue.
| A Teaspoon Every Four Hours Anta Playhouse | 1969 | 1 perf. |
| Four on a Garden Broadhurst Theatre | 1971 | 57 perf. |
| Molly Alvin Theatre | 1973 | 68 perf. |
| An American Millionaire Circle In The Square Theatre | 1974 | 20 perf. |
| Good News! St James Theatre | 1974 | 16 perf. |
| Boccaccio Edison Theatre | 1975 | 7 perf. |
| Doctor Jazz Winter Garden Theatre | 1975 | 5 perf. |
| The Leaf People Booth Theatre | 1975 | 8 perf. |
| Hair Biltmore Theatre | 1977 | 43 perf. |
| Is there life after high school? Ethel Barrymore Theatre | 1982 | 12 perf. |
| Merlin Mark Hellinger Theatre | 1983 | 199 perf. |
| Leader of the Pack Ambassador Theatre | 1985 | 120 perf. |
| Legs Diamond Mark Hellinger Theatre | 1988 | 64 perf. |
| Sweeney Todd: The Demon Barber of Fleet Street Circle In The Square Theatre | 1989 | 188 perf. |
| She Loves Me Criterion Center Stage Right | 1993 | 354 perf. |
| A Grand Night for Singing Criterion Center Stage Right | 1993 | 52 perf. |
| Company Criterion Center Stage Right | 1995 | 68 perf. |
| Inherit the Wind Royale Theatre | 1996 | 45 perf. |
| The Capeman Marquis Theatre | 1998 | 68 perf. |
| Little Me Criterion Center Stage Right | 1998 | 99 perf. |
| Night Must Fall Lyceum Theatre | 1999 | 119 perf. |
| Sexaholix Royale Theatre | 2001 | 67 perf. |
| Judgment at Nuremberg Longacre Theatre | 2001 | 56 perf. |
| Little Shop of Horrors Virginia Theatre | 2003 | 372 perf. |
| Tartuffe American Airlines Theatre | 2003 | 53 perf. |
| After The Fall American Airlines Theatre | 2004 | 53 perf. |
| Good Vibrations Eugene Oneill Theatre | 2005 | 94 perf. |
| Lennon Broadhurst Theatre | 2005 | 49 perf. |
| The Pajama Game American Airlines Theatre | 2006 | 129 perf. |
| After Miss Julie American Airlines Theatre | 2009 | 53 perf. |
| Bye Bye Birdie Henry Millers Theatre | 2009 | 117 perf. |
| Time Stands Still Samuel J Friedman Theatre | 2010 | 193 perf. |
| Glengarry Glen Ross Gerald Schoenfeld Theatre | 2012 | 45 perf. |
| It's Only a Play Gerald Schoenfeld Theatre | 2014 | 274 perf. |
| China Doll Gerald Schoenfeld Theatre | 2015 | 54 perf. |
| To Kill a Mockingbird Shubert Theatre | 2018 | 626 perf. |
| Gary: A Sequel to Titus Andronicus Booth Theatre | 2019 | 65 perf. |
| The Inheritance Ethel Barrymore Theatre | 2019 | 132 perf. |
| KPOP Circle In The Square Theatre | 2022 | 17 perf. |
| Once Upon a One More Time Marquis Theatre | 2023 | 83 perf. |